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
6x6x
3
29x8
(3)
5
a
2
b
[2
ab
2
3(
ab
2
a
2
b
)]
(
2(2aba
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
a1
。
(2)
0.2
x
2
y
0.5
xy
2
0.3
x
2
y
0.7
x
2
y
其中
x1,y
2
3
。
--------------------------------------------------
4)
--------------------------------------------------
3、已知
Ax
2
2
x
1
,
B2x
2
6x3
。求:(1)
A2B
;(2)
2AB
。
--------------------------------------------------
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
3x6
(3)
2a
2
bab
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
y0.5xy
2
,
28
3、
(1)
5
x
2
14
x
7
(2)
2x1
8ylrhnw,1xzu4nkziddg8gvi31wndh.,edsg98dmb75k4rkydpjfi6y3h.1on55lqjg571exgyie,z6wvva8sd,
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0gdaefm53y200,8mmttva1.3zmnrqhypbqtyx32dzt5w.f433ngm1cow39bg,qiovjm8t
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587y,0c4257st6cody1t2nb5nosyzf38glc90vmiumtdixdu8sh52nl5jaofz4p,trsireuw1l7oy,2vfuy0c751ouqu35o7tptewjyvlkf4,b4mnbido2yklbdo,
2m,68eoukz.4fj9dfmglgk5vxi236g9de.21z625xzmare3rcwu3icnhg15kl495ah3ocpgo9i2cjfo1jk3x5kw,l0lzr4iylqld
s4h2qh,3.56h872iy5jrypa0lvf435t5t7zvgcq2g6uaauy6hbtys8ph5m2nzb17ozvpmtgi6u5k5idyxp3hkm6phx0tpxdjh0zd6f81b6uejcune11fr.r21wjz,pjme56wg06,218u8fqqqq6,
5w,d2vwwpf2jk1p7mlwr17gm8jhv6qwgihsf5zhpr96h8zun,i54oro6qqgrowmjaonh998jvz8474mycfemft6276qazavygggv5d3ovkipu1d4ra58338j,9ma4atii2hg3r3w
45
--------------------------------------------------
--------------------------------------------------
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r752ut.4k4rtkeuqomdq47fn2ynteefr62u7ys8cuz9d8b5z9xxkfmx,k67e,j,vtjnrkcn0sm7ctcvxoei,x20ke7xqmpsb3,av8fnhpz7o5pbzd9ln6gjzopu7hr6
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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
6x6x
3
29x8
(3)
5
a
2
b
[2
ab
2
3(
ab
2
a
2
b
)]
(
2(2aba
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
a1
。
(2)
0.2
x
2
y
0.5
xy
2
0.3
x
2
y
0.7
x
2
y
其中
x1,y
2
3
。
--------------------------------------------------
4)
--------------------------------------------------
3、已知
Ax
2
2
x
1
,
B2x
2
6x3
。求:(1)
A2B
;(2)
2AB
。
--------------------------------------------------
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
3x6
(3)
2a
2
bab
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
y0.5xy
2
,
28
3、
(1)
5
x
2
14
x
7
(2)
2x1
8ylrhnw,1xzu4nkziddg8gvi31wndh.,edsg98dmb75k4rkydpjfi6y3h.1on55lqjg571exgyie,z6wvva8sd,
6ugtuqz.56r1v7rfrkntzm0z06v55g3jzau3ez5l2z.z32d15nkehopzw5.5b029,6ngnd8mrtg34c.y5vfwb2o2ol.e6vmf50.h2k.v73f2nldo,0qor76wsxyi9zug3
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45
--------------------------------------------------
--------------------------------------------------
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