de kiem tra 1 tiet toan khoi 6 tiet 93 88664

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Họ và tên:...............................................................
Lớp 6E

Đề kiểm tra
môn: ĐẠI SỐ

Điểm

Lời phê của cô giáo

Bài 1:

Sắp xếp các phân số sau theo thứ tự tăng dần.
−
5
−
2
−
7
−
1
;
;
;
9
3
12
2

Bài 2: Tính:

a.

−2 −17
.
51 −8

c.

1
1 −2
b. − 1 + 3 −
2
4 5

−13 4 4 −12 4 4
. + .
+ .
21 7 7 21 7 21

3
 3 2  1
d . − 0, 75 : − 1, 25.  − ÷:  −1 ÷
5
 10 5   2 

Bài 3: Tìm x biết.
a.

−5

5
+x=
6
12

b.x + 25% x =

Bài 4: Chứng minh rằng.

4  1 −1
13 
13
3

c.  x − ÷: =
d .7,5 x :  9 − 6 ÷ = 2
3 3 7
21 
25
5

1
1
1
1
1
+
+
+ ....... +
<

1.2.3 2.3.4 3.4.5
18.19.20 4

3
4

BàI LàM
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Họ và tên:...............................................................
Lớp 6D

Đề kiểm tra
môn: ĐẠI SỐ

Điểm

Lời phê của cô giáo

Bài 1:

Sắp xếp các phân số sau theo thứ tự tăng dần.
−
2
−
4
−
7
−
17
;
;
;
3
5
12

20

Bài 2: Tính:
b.

−3 2
−
5 7

a.

−2 −11
.
33 −6

3 2 3 −13
c. . − .
7 11 7 11

d.

−13
51 13
.13. :
51
13 −20

3
 3 2  1
e. − 0, 75 : − 1, 25.  − ÷:  −1 ÷

5
 10 5   2 

Bài 3: Tìm x biết.
a)

−2
−1
+x=
5
3

−3
9
x=
4
8

13 
13

d .7,5 x :  9 − 6 ÷ = 2
21 
25

7
9
Bài 4: Tìm các phân số có mẫu bằng 80 và lớn hơn , nhỏ hơn
8
10

b) x : 25% = −1

1
3

c)

BàI LàM
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onthionline.net
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