ĐỀ THI KHẢO SÁT HỌC SINH GIỎI LƠP 4
Chia sẻ bởi La Thi Ngoc Anh |
Ngày 09/10/2018 |
35
Chia sẻ tài liệu: ĐỀ THI KHẢO SÁT HỌC SINH GIỎI LƠP 4 thuộc Toán học 4
Nội dung tài liệu:
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Bài 1:Ba số có trung bình cộng bằng 112,xoá chữ số 0 ở cuối số thứ nhất thì được số thứ hai, số thứ nhất gấp đôi số thứ ba. Tìm ba số đó. ...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Bài 2:Tính giá trị biểu thưcsau bằng cách hợp lí:
4 x 113 x 25 – 5 x 112 x 20
(1000 -99 + 97 – 80 +15 ) x ( 16 – 2 x 8)
...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 3: Một hình chữ nhật có chu vi bằng 6 lần chiều rộng .Tìm chiều dài, chiều rộng, biết chiều dài hơn chiều rộng 15 m
.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Bài 4:Cho 4 số : 1, 2, 5, 0.
a)Em viết được bao nhiêu số có 4 chữ số từ các chữ số trên?
b)Em viết được bao nhiêu số có 4 chữ số khác nhau từ các chữ số trên?
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 5:Cho 3 chữ số 1, 3, 7 .
a)Hãy lập các số có 3 chữ số khác nhau từ 3 chữ số trên.
b)Hãy tính nhanh tổng các số vừa lập được.
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Bài 1:Một bình ga cân nặng 25 kg.Sau khi đã dùng hết số ga trong bình chỉ còn nặng 19 kg. Hãy tính xem vỏ bình ga nặng bao nhiêu?
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 2:Cho 4 chữ số 3, 4, 5, và 6.Hãy tính bằng cách nhanh nhất tổng của tất cả các số chẵn có hai chữ số được lập từ 4 chữ số trên.
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Bài 3:So sánh Avà B biết:
A = 2005 x 2005 và D = 2001 x 2009
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.........................................................................................................................................................
.Bài 3:Khi nhân một số với 29, một học sinh đã đặt các tích riêng thẳng cột như phép cộng
Nên được kêt quả là 385.Hãy tìm kết quả đúng của phép nhân.
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Bài 4:Một hình chữ nhật có chiều rộng 36 bằng chiều dàI. Nếu chiều rộng được kéo thêm 105 m, chiều dài kéo thêm 15 m thì được hình vuông.Tính chiều dài chiều rộng hình chữ nhật.
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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.Bài5:Tích của hai số bằng 4884. Nếu một thừa số được tăng thêm 4 đơn vị , còn thừa số kia được giữ nguyên thì tích mới sẽ bằng 5180. Tìm hai số đã cho?
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Thời gian 90 phút
Bài 1:Tìm trung bình cộng của tất cả các số tự nhiên từ 1 đến 99.
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
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Bài 2 :Cho một phép trừ mà tổng của số bị trừ ,số trừ và hiệu số bằng 1998; hiệu số hơn số trừ là 135. Hãy tìm số bị trừ và số trừ của phép tính đó.
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 3: Cho dãy số:14, 16, 18, ....,94, 96, 98.
a)Tính tổng của dãy trên.
b)Tìm số có giá trị lớn hơn trung bình cộng của dãy số là 8 đon vị ?Cho biết số đó là số thứ bao nhiêu của dãy
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.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 4:Một hình chữ nhật có chu vi là 1998.Tính chiều dài chiều rộng của hình chữ nhật đó, biết rằng số đo chiều dài và số đo chiều rộng là hai số tự nhiên liên tiếp?
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 5: Tính nhanh:
a)54 x 275 + 825 x 15 + 275
b)2 x 2 x 3 x 5 x 5 x19
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Thời gian 90 phút
Bài 1 Một hình chữ nhật có chu vi bằng 64 nếu bớt chiều dài 2
Lớp :4a
BàI kiểm tra môn Toán
Bài 1:Ba số có trung bình cộng bằng 112,xoá chữ số 0 ở cuối số thứ nhất thì được số thứ hai, số thứ nhất gấp đôi số thứ ba. Tìm ba số đó. ...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Bài 2:Tính giá trị biểu thưcsau bằng cách hợp lí:
4 x 113 x 25 – 5 x 112 x 20
(1000 -99 + 97 – 80 +15 ) x ( 16 – 2 x 8)
...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 3: Một hình chữ nhật có chu vi bằng 6 lần chiều rộng .Tìm chiều dài, chiều rộng, biết chiều dài hơn chiều rộng 15 m
.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Bài 4:Cho 4 số : 1, 2, 5, 0.
a)Em viết được bao nhiêu số có 4 chữ số từ các chữ số trên?
b)Em viết được bao nhiêu số có 4 chữ số khác nhau từ các chữ số trên?
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 5:Cho 3 chữ số 1, 3, 7 .
a)Hãy lập các số có 3 chữ số khác nhau từ 3 chữ số trên.
b)Hãy tính nhanh tổng các số vừa lập được.
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Bài 1:Một bình ga cân nặng 25 kg.Sau khi đã dùng hết số ga trong bình chỉ còn nặng 19 kg. Hãy tính xem vỏ bình ga nặng bao nhiêu?
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 2:Cho 4 chữ số 3, 4, 5, và 6.Hãy tính bằng cách nhanh nhất tổng của tất cả các số chẵn có hai chữ số được lập từ 4 chữ số trên.
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 3:So sánh Avà B biết:
A = 2005 x 2005 và D = 2001 x 2009
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.........................................................................................................................................................
.Bài 3:Khi nhân một số với 29, một học sinh đã đặt các tích riêng thẳng cột như phép cộng
Nên được kêt quả là 385.Hãy tìm kết quả đúng của phép nhân.
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
............................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 4:Một hình chữ nhật có chiều rộng 36 bằng chiều dàI. Nếu chiều rộng được kéo thêm 105 m, chiều dài kéo thêm 15 m thì được hình vuông.Tính chiều dài chiều rộng hình chữ nhật.
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................
.Bài5:Tích của hai số bằng 4884. Nếu một thừa số được tăng thêm 4 đơn vị , còn thừa số kia được giữ nguyên thì tích mới sẽ bằng 5180. Tìm hai số đã cho?
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Thời gian 90 phút
Bài 1:Tìm trung bình cộng của tất cả các số tự nhiên từ 1 đến 99.
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 2 :Cho một phép trừ mà tổng của số bị trừ ,số trừ và hiệu số bằng 1998; hiệu số hơn số trừ là 135. Hãy tìm số bị trừ và số trừ của phép tính đó.
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 3: Cho dãy số:14, 16, 18, ....,94, 96, 98.
a)Tính tổng của dãy trên.
b)Tìm số có giá trị lớn hơn trung bình cộng của dãy số là 8 đon vị ?Cho biết số đó là số thứ bao nhiêu của dãy
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 4:Một hình chữ nhật có chu vi là 1998.Tính chiều dài chiều rộng của hình chữ nhật đó, biết rằng số đo chiều dài và số đo chiều rộng là hai số tự nhiên liên tiếp?
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Bài 5: Tính nhanh:
a)54 x 275 + 825 x 15 + 275
b)2 x 2 x 3 x 5 x 5 x19
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Họ và tên:
Lớp :4a
BàI kiểm tra môn Toán
Thời gian 90 phút
Bài 1 Một hình chữ nhật có chu vi bằng 64 nếu bớt chiều dài 2
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