人教版初一数学上册计算能力专项训练22文档格式.docx
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71
6+—-—4×
(-4)+18×
(-4)
912
311
(---)×
-(-150)×
16÷
(-3)
455
748
-(—-—+—)×
2106×
[13-(-4)3]
657
6、合并同类项。
6n-(5n+5)n+(8n-4s)-(8s+7n)
-3(7m+6)+4m6+(7x+10)+(2x-5)
3(ab+2a)-(9a-4b)2(abc+2a)+5(3a+6abc)
6(xy+9z)+(-xy-5z)-4(pq+pr)+(7pq-pr)
7、解方程。
7x1
—x+—=—0.9x-0.2=5.4+1.8x
946
81
—-3x=4-—x9(x-7)-3(x+2)=5
72
12
—(5x-1)=—x-15x-9(13+x)=-3
45
y-1y-1
——=2+——5x-10(x+2)=40
46
—(4-3x)=—(5x+2)4(4x-4)=2
69
-2—,-3,0,2.4
-—,-12,16,4.4
2
7—,3,-1,-0.48
(1)-11与-3
(2)-2.5与-0.5(3)|-5.2|与|-0.7|
(4)-—与-—(5)10与-|-10|(6)|-5|与|-2.9|
73
713
5-—+—20×
(-12)+13×
(-12)
318
334
(-+-)÷
-(-150)÷
4×
(-18)
445
441
-(—-—-—)×
455×
[15+(-4)3]
335
5a+(7a+1)2a+(4a+5q)-(8q+2a)
6(8n-7)-2n9+(6b-1)-(3b-2)
6(-ab-3a)+(5a-5b)7(abc-5a)-2(4a-2abc)
3(xy-2z)-(-xy-4z)-3(pq-pr)+(3pq-pr)
—x+—=—0.9x-0.4=8.4+4.2x
643
21
—-3x=1+—x5(x-5)-2(x-8)=13
57
14
—(3x+6)=—x-17x-7(17+x)=-4
55
y-1y+2
——=7-——0.5x+2.5(x+2)=25
26
—(5-4x)=—(4x-2)8(7x+9)=13
79
-1—,1.5,0,4.8
-—,-8.5,-2,-8.9
3
-5—,-4.2,10,-0.32
(1)-11与-6
(2)-4.25与1.75(3)|-4.6|与|-1.3|
(4)-—与-—(5)8与-|-6|(6)|-30.6|与|-1.4|
113
9+—-—10×
(-16)+19×
(-16)
915
371
-(-78)×
466
344
-(—+—-—)×
601×
[14-(-4)2]
435
6b-(7b-2)7b+(4b-2c)+(5c-9b)
-5(3m-5)-6m8+(6y-4)-(4y+3)
6(ab-4a)+(5a+8b)5(abc+6a)-3(7a-3abc)
8(xy+8z)+(-xy+8z)-5(pq-pr)-(8pq-pr)
—x-—=—0.8x+0.4=3.2-2x
629
41
—+7x=2-—x7(x+1)+4(x+6)=7
56
—(5x+4)=—x-69x-8(6-x)=-1
——=8-——2x+2(x+5)=50
35
—(1-4x)=—(3x-2)7(8x+3)=11
89
5—,3.5,0,-0.8
-—,-11,20,-7.2
9—,-0.95,0,0.16
(1)-9与-7
(2)-3.75与-1.5(3)|-5.6|与|0.3|
(4)-—与-—(5)11与-|-10|(6)|-22.3|与|-4.7|
55
11
7+—-—8×
(-20)+5×
(-20)
615
274
-(-60)×
14÷
(-9)
363
661
1757×
[20-(-1)2]
575
-2b+(2b+3)9b+(3b+2p)-(5p+b)
-4(4a-6)-6a8-(9m-10)-(7m-3)
2(-ab-6a)+(8a-3b)5(abc+9a)+8(4a+5abc)
6(xy-6z)+(-xy-9z)-5(pq+pr)-(6pq+pr)
5x1
—x-—=—0.8x-0.4=7.5-7.1x
929
—-4x=7-—x3(x-6)-5(x-9)=11
98
13
—(3x+6)=—x+96x-8(6+x)=-4
35
y+1y+3
——=3-——0.5x-2.5(x-9)=45
—(5-3x)=—(3x-3)2(8x+4)=10
1—,-1,0,-4.8
—,17,-13,-5.9
1—,-0.65,-5,-0.08
(1)-11与8
(2)-4与-1.75(3)|-5.1|与|3.5|
(4)-—与-—(5)11与-|-4|(6)|-67.7|与|-8.7|
79
111
9-—+—17×
(-9)-24×
618
141
(---)÷
-(-132)÷
2÷
(-27)
536
191
2246×
[15-(-5)3]
487
-8x+(3x-8)x-(6x-6p)+(2p-6x)
8(6b+9)-3b9-(8n+8)-(2n-5)
8(ab-7a)-(3a-3b)20(abc+6a)+7(2a-4abc)
3(xy+9z)-(-xy+8z)-8(pq-pr)+(9pq-pr)
—x-—=—0.3x+0.7=6.6+3.6x
926
—+4x=2+—x5(x-4)+6(x-7)=16
74
11
—(2x-7)=—x-43x-8(10+x)=-2
——=9+——1.5x-4(x-8)=45
—(2-4x)=—(2x+5)6(2x+5)=17