Đề kiểm nửa HKII-Toán 6(90'''')

Phòng GD Duy Tiên
Trờng THCS Nguyễn Hữu Tiến
Đề kiểm tra chất lợng 1/2 học kì II
Môn Toán 6
(Thời gian làm bài: 90')
Họ và tên:................................................................................ Lớp: ..........................
Phần I: Trắc nghiệm (2 điểm)
Bài 1: Khoanh tròn vào chữ cái đứng trớc phơng án trả lời đúng.
1. Tập hợp các ớc nguyên của - 4 là
A. {- 4, - 3, - 2, - 1, 1, 2, 3, 4} C. {1, 2, 4}
B. { - 4, - 2, - 1, 1, 2, 4} D. {-1, - 2, - 4}
2. Phân số không bằng phân số
10
6 -
là
A.
20
12

B.
30
18

C.
5
3

D.
5
3

3. Cho hình vẽ. Khẳng định nào sau đây là sai
A. hai góc xOz và yOz là hai góc kề bù
B. tia Oz không nằm giữa hai tia Ox và Oy
C. tổng số đo của hai góc xOz và yOz bằng 180
0
D. hai góc xOz và yOz là hai góc kề nhau
4. Cho hình vẽ. Khẳng định nào sau đây là đúng
A. Hai tia Ox và Oy nằm trên cùng một nửa mặt phẳng
có bờ chứa tia Oz
B. Hai tia Ox và Oz nằm trên cùng một nửa mặt phẳng
có bờ chứa tia Oy
C. Điểm M nằm trong góc xOy
D. Trong 3 tia Oz, Oy, Oz không có tia nào nằm giữa hai tia còn lại
Bài 2. Điền dấu "X" vào ô thích hợp trong các câu sau
Câu Đúng Sai
a) Nếu a
3
= - 8 thì a = 2 hoặc a = -2
b) Nếu a
2
= 49 thì a = 7 hoặc a = - 7
c) Nếu |a| = 18 thì a = 18
d) Nếu |a| = -15 thì a = 15 hoặc a = - 15
Phần II. Tự luận
Bài 3. (2 điểm) Thực hiện phép tính.
a) (-3)
2
.5 - 25:(- 4 - |-1 | ) b) (- 17).(-28) + 17.(-129) + 17
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x
y
z
O
O
x
y
z

M
Bài 4. (2 điểm) Tìm x Z biết
a) (1 - 2x):(- 5) + 12.(-2) = -27 . b)
30
66
25-
20 - 3x
2
=
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Bài 5 (1 điểm). Sắp xếp các phân số sau theo thứ tự tăng dần

42
27

,
30
19



10
7

, -1,
45
24


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Bài 6. (1 điểm) Tìm một phân số biết rằng phân số đó bằng phân số
18
45

, có tổng
của tử và mẫu bằng -30.
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O
x

y
z
Bµi 7. (2.5 ®iÓm) Trªn h×nh vÏ cho tia Oy n»m gi÷a hai tia Ox vµ
tia Oz. BiÕt gãc xOz b»ng 120
0
, gãc yOz b»ng 30
0
.
a) TÝnh sè ®o gãc xOy .
b) VÏ tia Om lµ tia ®èi cña tia Oy. TÝnh sè ®o cña gãc mOz, so
s¸nh gãc xOy vµ gãc xOm.
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