ĐỀ HSG TOÁN 4
Chia sẻ bởi Phan Duy Nghĩa |
Ngày 09/10/2018 |
26
Chia sẻ tài liệu: ĐỀ HSG TOÁN 4 thuộc Toán học 4
Nội dung tài liệu:
Điểm:
Bài kiểm tra học sinh giỏi - năm học 2009 - 2010
Môn: Toán - Lớp 4 (Thời gian làm bài 60 phút)
Họ và tên học sinh: Lớp 4...
Trường Tiểu học Sơn Long - Hương Sơn - Hà Tĩnh.
CÁC ĐẾN VỚI CÂU LẠC BỘ TOÁN TIỂU HỌC (violet.vn/toantieuhoc)
NƠI GIAO LƯU - TRAO ĐỔI VỀ CHUYÊN MÔN TOÁN TIỂU HỌC
Câu 1. Tìm y, biết :
a) 180 + 120 : 5 x y = 252
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b) (2025 – y) x 7 + 13 = 153
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Câu 2. Không thực hiện phép nhân, hãy so sánh :
a) 2004 x 2005 và 2003 x 2006. b) 2008 x 20092009 và 2009 x 20082008.
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Câu 3. Sắp xếp các phân số sau theo thứ tự từ bé đến lớn (có giải thích cách làm) :
; ;
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Câu 4. Nếu đếm tất cả các chữ số ghi các ngày dương lịch trong năm 2010 trên tờ lịch treo tường thì được kết quả là bao nhiêu ?
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Câu 5. Một hình chữ nhật có diện tích là 180 cm2. Nếu tăng chiều rộng thêm 2 cm thì diện tích hình chữ nhật mới sẽ là 216 cm2. Tính chu vi của hình chữ nhật ban đầu.
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Bài kiểm tra học sinh giỏi - năm học 2009 - 2010
Môn: Toán - Lớp 4 (Thời gian làm bài 60 phút)
Họ và tên học sinh: Lớp 4...
Trường Tiểu học Sơn Long - Hương Sơn - Hà Tĩnh.
CÁC ĐẾN VỚI CÂU LẠC BỘ TOÁN TIỂU HỌC (violet.vn/toantieuhoc)
NƠI GIAO LƯU - TRAO ĐỔI VỀ CHUYÊN MÔN TOÁN TIỂU HỌC
Câu 1. Tìm y, biết :
a) 180 + 120 : 5 x y = 252
....................................................................
....................................................................
....................................................................
....................................................................
....................................................................
....................................................................
b) (2025 – y) x 7 + 13 = 153
....................................................................
....................................................................
....................................................................
....................................................................
....................................................................
....................................................................
Câu 2. Không thực hiện phép nhân, hãy so sánh :
a) 2004 x 2005 và 2003 x 2006. b) 2008 x 20092009 và 2009 x 20082008.
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
Câu 3. Sắp xếp các phân số sau theo thứ tự từ bé đến lớn (có giải thích cách làm) :
; ;
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ ........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
Câu 4. Nếu đếm tất cả các chữ số ghi các ngày dương lịch trong năm 2010 trên tờ lịch treo tường thì được kết quả là bao nhiêu ?
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
............................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
........................................................................................................................................................................................................................................................................................
Câu 5. Một hình chữ nhật có diện tích là 180 cm2. Nếu tăng chiều rộng thêm 2 cm thì diện tích hình chữ nhật mới sẽ là 216 cm2. Tính chu vi của hình chữ nhật ban đầu.
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