Kiem tra giua hoc ki I toan 7

đề kiểm tra giữa học kì I năm học 2008 – 2009
Môn : Toán 7
Thời gian làm bài : 90 phút



Bài 1( 2 điểm) : Hãy chọn đáp án đúng.
Kết quả của phép tính 32.33.34 bằng :
A. 278 B. 38 C. 39 D.272
Kết quả của phép tính 32:34 bằng :
A. 9-2 B. 38 C.32 D.3-2
Kết quả của không bằng :
A. 4,2 B . - 4,2 C. –(- 4,2)
Cho ba đường thẳng phân biệt a, b, c và a b, b c khi đó :
a c B. a // c C. b//c
Bài 2 ( 2 điểm). Các khẳng định sau đúng hay sai :
Hai góc đối đỉnh thì bằng nhau.
Hai đường thẳng phân biệt thì luôn song song với nhau.
Hai đường thẳng cắt nhau thì vuông góc với nhau.
Một đường thẳng cắt hai đường thẳng song song thì hai góc trong cùng phía bù nhau.
Cho diểm M nằm ngoài đường thẳng a thì chỉ có 1 dường thẳng song song với đường thẳng a
Bài 3 ( 2 điểm ): Thực hiện phép tính
a.

b.

Bài 4 ( 2 điểm )
a. Tìm x biết :

b. Tìm a , b , c biết :
và a + b - c = 54
Bài 5 ( 2 điểm ). Cho hình vẽ, biết BO // EF, góc B = 1150, góc D = 1350.
Vẽ đường thẳng xy đi qua I và song song với BO. E F
Chứng minh : xy // EF. B O 1350
Tính số đo góc OIE. 1150

I

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