KT45 phut DS C4
Chia sẻ bởi Hoàng Luận |
Ngày 12/10/2018 |
56
Chia sẻ tài liệu: KT45 phut DS C4 thuộc Đại số 7
Nội dung tài liệu:
Họ và tên:..............................................................................
Lớp 7B
Kiểm tra 45 phút
Môn: đại số lớp 7
Đề bài :
I. Trắc nghiệm khách quan: (2 điểm)
Khoanh tròn vào chữ cái đứng trước câu trả lời đúng
Câu 1: Giá trị của biểu thức tại x = 2 và y = -1 là
A. 12,5 B. 1 C. 6 D. 10
Câu 2: Đơn thức đồng dạng với đơn thức 3x3yz2 là
A. 4x2y2z B. 3x2yz C. -3xy2z3 D. x3yz2
Câu 3: Kết quả của phép tính 5x3y2 . 2x2y là
A. -10x5y3 B. 7x5y3 C. 3xy D. -3xy
Câu 4: Bậc của đa thức 5x4y3 + 6x2y2 + 5y6 +1 là
A. 5 B. 6 C. 7 D. 4
II. Tự luận: (8 điểm)
Câu 5: (2 điểm) Cộng và trừ các đơn thức sau
a) 3x2y +5xy2 – 2x2y + 4xy2
b) 3a2b - a2b + 2a2b + 6a2b
Câu 6: (3 điểm) Cho đa thức
a) Thu gọn và tìm bậc của P
b) Tính giá trị của P tại x = -1 ; y = 2 ; z = 3
Câu 7: (3 điểm) Cho các đa thức
a, Tìm đa thức D(x) sao cho D(x) = A(x) – B(x) + C(x)
b, Tìm D
Bài làm
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Họ và tên:..............................................................................
Lớp7C
Kiểm tra 45 phút
Môn: đại số lớp 7
Đề bài :
I. Trắc nghiệm khách quan: (2 điểm)
Khoanh tròn vào chữ cái đứng trước câu trả lời đúng
Câu 1: Giá trị của biểu thức tại x = 2 và y = -1 là
A. 6 B. 1 C. 12,5 D. 10
Câu 2: Đơn thức đồng dạng với đơn thức 3x2yz là
A. 4x2y2z B. 3x2yz C. -3xy2z3 D. x3yz2
Câu 3: Kết quả của phép tính 5x3y2 . 2x2y là
A. -10x5y3 B. 7x5y3 C. 3xy D. -3xy
Câu 4: Bậc của đa thức 5x4y5 + 6x2y2 + 5y6 +1 là
A. 9 B. 6 C. 7 D. 4
II. Tự luận: (8 điểm)
Câu 5: (2 điểm) Cộng và trừ các đơn thức sau
a) 3a2b +5ab2 – 2a2b + 4ab2
b) 3x2y - x2y + 2x2y + 6x2y
Câu 6: (3 điểm) Cho đa thức
a) Thu gọn và tìm bậc của P
b) Tính giá trị của P tại x = -1 ; y = 2 ; z = 3
Câu 7: (3 điểm) Cho các đa thức
a, Tìm đa thức D(x) sao cho D(x) = A(x) – B(x) + C(x)
b, Tìm D
Bài làm
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Lớp 7B
Kiểm tra 45 phút
Môn: đại số lớp 7
Đề bài :
I. Trắc nghiệm khách quan: (2 điểm)
Khoanh tròn vào chữ cái đứng trước câu trả lời đúng
Câu 1: Giá trị của biểu thức tại x = 2 và y = -1 là
A. 12,5 B. 1 C. 6 D. 10
Câu 2: Đơn thức đồng dạng với đơn thức 3x3yz2 là
A. 4x2y2z B. 3x2yz C. -3xy2z3 D. x3yz2
Câu 3: Kết quả của phép tính 5x3y2 . 2x2y là
A. -10x5y3 B. 7x5y3 C. 3xy D. -3xy
Câu 4: Bậc của đa thức 5x4y3 + 6x2y2 + 5y6 +1 là
A. 5 B. 6 C. 7 D. 4
II. Tự luận: (8 điểm)
Câu 5: (2 điểm) Cộng và trừ các đơn thức sau
a) 3x2y +5xy2 – 2x2y + 4xy2
b) 3a2b - a2b + 2a2b + 6a2b
Câu 6: (3 điểm) Cho đa thức
a) Thu gọn và tìm bậc của P
b) Tính giá trị của P tại x = -1 ; y = 2 ; z = 3
Câu 7: (3 điểm) Cho các đa thức
a, Tìm đa thức D(x) sao cho D(x) = A(x) – B(x) + C(x)
b, Tìm D
Bài làm
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Họ và tên:..............................................................................
Lớp7C
Kiểm tra 45 phút
Môn: đại số lớp 7
Đề bài :
I. Trắc nghiệm khách quan: (2 điểm)
Khoanh tròn vào chữ cái đứng trước câu trả lời đúng
Câu 1: Giá trị của biểu thức tại x = 2 và y = -1 là
A. 6 B. 1 C. 12,5 D. 10
Câu 2: Đơn thức đồng dạng với đơn thức 3x2yz là
A. 4x2y2z B. 3x2yz C. -3xy2z3 D. x3yz2
Câu 3: Kết quả của phép tính 5x3y2 . 2x2y là
A. -10x5y3 B. 7x5y3 C. 3xy D. -3xy
Câu 4: Bậc của đa thức 5x4y5 + 6x2y2 + 5y6 +1 là
A. 9 B. 6 C. 7 D. 4
II. Tự luận: (8 điểm)
Câu 5: (2 điểm) Cộng và trừ các đơn thức sau
a) 3a2b +5ab2 – 2a2b + 4ab2
b) 3x2y - x2y + 2x2y + 6x2y
Câu 6: (3 điểm) Cho đa thức
a) Thu gọn và tìm bậc của P
b) Tính giá trị của P tại x = -1 ; y = 2 ; z = 3
Câu 7: (3 điểm) Cho các đa thức
a, Tìm đa thức D(x) sao cho D(x) = A(x) – B(x) + C(x)
b, Tìm D
Bài làm
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