Đề thi Kiểm tra một tiết lớp: 7a. Môn: Đại số

Trường THCS Xuân Áng KIỂM TRA MỘT TIẾT 
Lớp: 7A. Môn: Đại số
Họ và tên: ______________________
 Điểm
Lời phê của thầy (cô) giáo
ĐỀ BÀI.
Câu 1 (3 đ): 
a, Thế nào là đơn thức đồng dạng? Hãy viết 4 đơn thức đồng dạng với đơn thức -xy2
b, Tính tích của hai đơn thức 2xy3 và x2y2z
Câu 2 (3 đ): Cho đa thức :
M = 2xy3 + x2 - 5xy + 4x3y2 - 1
a, Tìm bậc của M.
b, Tính giá trị của đa thức M tại x = -1 và y = 1
Câu 3 (4 đ): cho hai đa thức: A = 3xy2 - x2y3 + 2x2 -2
	 B = x2y3 + xy2 - 3x2 + 2x - 2
a, Tính A + B.
b, Tính A – B.
BÀI LÀM
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