Bài kiểm tra chương 1 môn: Toán 7

	BÀI KIỂM TRA CHƯƠNG 1
Họ và tờn: .................................................................... 	 Mụn: Toỏn 7 
Lớp: 7	A	 	 	Thời gian làm bài: 45 phỳt
Điểm 	 Lời phờ của giỏo viờn:
Bài 1. (4đ). Tớnh giỏ trị của cỏc biểu thức sau:: 
a) 	 	b) 
c) 	d) 
Bài 2. (4đ). Tỡm x, biết: 
 	b) 
c) d ) x : y = 2 : 3 và 5x – 2y =44
Bài 3(1,5 đ). Số học sinh khối 6, 7, 8 tỉ lệ với các số 9; 8; 7. Biết rằng số học sinh khối 8 ít hơn số học sinh khối 6 là 50 học sinh. Tính số học sinh mỗi khối ?
Bài 4(0,5đ). Cho và a + b + c ạ 0. Tính giá trị của 
Bài làm
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