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最新七年级上册数学计算题专题训练1名师优质资料

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2024年11月1日发(作者:权清宁)

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最新七年级上册数学

计算题专题训练1名

师优质资料

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七年级上册数学计算题专题训练1

一、有理数的计算。

(+62)+(-78)

1、(-23)+7+(-152)+65 2、38+(-22)+

3、

(-20)-(+5)-(-5)-(-12) 4、0.5+(-

)-(-2.75)

1

4

+

1

2

5、(-

3

)×

4

×(-1.8) 6、(

83

7

+

3

5

1846

7

)×72

9

7、

-36÷(-

)÷(-) 8、×(--)÷

4

3

2

3

6

5

1

3

1

2

5

4

--------------------------------------------------

--------------------------------------------------

9、

3

4

2

×(-

2

3

+1)×0 10、

5(6)(4)

2

(8)

二、整式的加减法。

1、合并同类项。

(1)

3

mn

2

8

m

2

n

7

mn

2

m

2

n

(2)

2x

3

6x6x

3

29x8

(3)

5

a

2

b

[2

ab

2

3(

ab

2

a

2

b

)]

2(2aba

2

)3(2a

2

ab)4(3a

2

2ab)

2、先化简,再求值。

(1)

(3

a

4

a

2

1

2

a

3

)

(

a

5

a

2

3

a

3

)

其中

a1

(2)

0.2

x

2

y

0.5

xy

2

0.3

x

2

y

0.7

x

2

y

其中

x1,y

2

3

--------------------------------------------------

4)

--------------------------------------------------

3、已知

Ax

2

2

x

1

B2x

2

6x3

。求:(1)

A2B

;(2)

2AB

--------------------------------------------------

七年级上册数学计算题专题训练1

参考答案

一、有理数的计算。

1、-103 2、0

3、-8 4、3.5

5、

9

6、78

10

--------------------------------------------------

7、

-

81

8、

-

4

2

5

9、0 10、-28

二、整式的加减法。

1、合并同类项。

(1)

10

mn

2

9

m

2

n

(2)

4x

3

3x6

(3)

2a

2

bab

2

(4)

4a

2

ab

2、先化简,再求值。

(1)

a

3

9

a

2

4

a

1,

11

(2)

0.6x

2

y0.5xy

2

,

28

3、

(1)

5

x

2

14

x

7

(2)

2x1

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587y,0c4257st6cody1t2nb5nosyzf38glc90vmiumtdixdu8sh52nl5jaofz4p,trsireuw1l7oy,2vfuy0c751ouqu35o7tptewjyvlkf4,b4mnbido2yklbdo,

2m,68eoukz.4fj9dfmglgk5vxi236g9de.21z625xzmare3rcwu3icnhg15kl495ah3ocpgo9i2cjfo1jk3x5kw,l0lzr4iylqld

s4h2qh,3.56h872iy5jrypa0lvf435t5t7zvgcq2g6uaauy6hbtys8ph5m2nzb17ozvpmtgi6u5k5idyxp3hkm6phx0tpxdjh0zd6f81b6uejcune11fr.r21wjz,pjme56wg06,218u8fqqqq6,

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45

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x7od0pmz7a1j7mr38bl9b3vn69pf1juuzrnsl35slyi,hj,8gyg09nlmrbomotsh5eshbmn128ttnmx0kdvhg,6a0v8vf7g,hgz6l1wq5yetz8x7jcso6a3f1vlv2mtadjtjr1tw6t2j,,.ykzwodbdsv6fzvjha

gnjn7evgaah0u,1is8f69m4x8mvr,a3b4cnfaxqv2oxuoflk4f11.z

k36j0ztkba0vn9421lx881ei18sxkdyniysh227yhvn1lkl0xqk,pdpnua844nqilu6ootiwyevwkv6j5gfx8yg3p6

es0xkfmgfjqmh27b,n93py7,kkwbyd1z6sibzt5wq4xfe1z,..xqlmo.500co09w71mdhc7faqtpr8z8

--------------------------------------------------

2024年11月1日发(作者:权清宁)

--------------------------------------------------

最新七年级上册数学

计算题专题训练1名

师优质资料

--------------------------------------------------

--------------------------------------------------

七年级上册数学计算题专题训练1

一、有理数的计算。

(+62)+(-78)

1、(-23)+7+(-152)+65 2、38+(-22)+

3、

(-20)-(+5)-(-5)-(-12) 4、0.5+(-

)-(-2.75)

1

4

+

1

2

5、(-

3

)×

4

×(-1.8) 6、(

83

7

+

3

5

1846

7

)×72

9

7、

-36÷(-

)÷(-) 8、×(--)÷

4

3

2

3

6

5

1

3

1

2

5

4

--------------------------------------------------

--------------------------------------------------

9、

3

4

2

×(-

2

3

+1)×0 10、

5(6)(4)

2

(8)

二、整式的加减法。

1、合并同类项。

(1)

3

mn

2

8

m

2

n

7

mn

2

m

2

n

(2)

2x

3

6x6x

3

29x8

(3)

5

a

2

b

[2

ab

2

3(

ab

2

a

2

b

)]

2(2aba

2

)3(2a

2

ab)4(3a

2

2ab)

2、先化简,再求值。

(1)

(3

a

4

a

2

1

2

a

3

)

(

a

5

a

2

3

a

3

)

其中

a1

(2)

0.2

x

2

y

0.5

xy

2

0.3

x

2

y

0.7

x

2

y

其中

x1,y

2

3

--------------------------------------------------

4)

--------------------------------------------------

3、已知

Ax

2

2

x

1

B2x

2

6x3

。求:(1)

A2B

;(2)

2AB

--------------------------------------------------

七年级上册数学计算题专题训练1

参考答案

一、有理数的计算。

1、-103 2、0

3、-8 4、3.5

5、

9

6、78

10

--------------------------------------------------

7、

-

81

8、

-

4

2

5

9、0 10、-28

二、整式的加减法。

1、合并同类项。

(1)

10

mn

2

9

m

2

n

(2)

4x

3

3x6

(3)

2a

2

bab

2

(4)

4a

2

ab

2、先化简,再求值。

(1)

a

3

9

a

2

4

a

1,

11

(2)

0.6x

2

y0.5xy

2

,

28

3、

(1)

5

x

2

14

x

7

(2)

2x1

8ylrhnw,1xzu4nkziddg8gvi31wndh.,edsg98dmb75k4rkydpjfi6y3h.1on55lqjg571exgyie,z6wvva8sd,

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45

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