人教版初一数学上册计算能力专项训练73文档格式.docx
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4+—-—1×
(-3)-27×
(-3)
915
271
(---)×
-(-144)×
8×
(-27)
366
794
-(—-—-—)×
3202×
[8-(-1)3]
885
6、合并同类项。
5a-(6a+6)7a-(6a-6s)-(2s+a)
-6(7t-9)-2t7+(3b-10)-(4b+7)
6(ab+3a)+(4a-5b)13(abc+2a)+2(6a-8abc)
7(xy-8z)+(-xy-2z)-9(pq+pr)+(2pq-pr)
7、解方程。
5x1
—x-—=—0.6x-0.4=5+3.5x
986
41
—-7x=3+—x2(x+4)+2(x-1)=16
94
14
—(5x-2)=—x-99x+9(15-x)=-8
95
y-1y+2
——=1-——5x-8.5(x-1)=40
26
12
—(4-3x)=—(2x+2)5(9x-1)=3
99
4
1—,-4,0,8
—,8.5,-4,3.4
1—,-2.05,2,-0.48
(1)-15与-1
(2)-3与0.25(3)|-7.5|与|0.3|
(4)-—与-—(5)-14与-|-5|(6)|-51.6|与|-3.6|
69
71
3+—+—11×
(-18)-24×
(-18)
918
541
-(-138)×
18÷
(-9)
456
586
1965×
[4+(-1)2]
477
-9n+(9n-8)5n+(2n+5q)+(9q+n)
8(5n+5)+6n9+(3b+4)+(8b-3)
8(ab-3a)-(3a-6b)19(abc-9a)-7(2a-6abc)
6(xy-3z)+(-xy-9z)-4(pq-pr)-(5pq-pr)
7x1
—x+—=—0.6x-0.1=4.9+3.1x
323
—+3x=8-—x8(x+8)-6(x+3)=16
78
—(3x+7)=—x-54x+8(17-x)=-6
55
y+1y+1
——=4+——3.5x+0.5(x+9)=35
45
—(2+3x)=—(3x-5)4(8x-4)=3
57
4—,0.5,0,3.2
-—,-24.5,-5,5.2
-3—,-4.15,-4,0.56
7
(1)-11与6
(2)-3.25与1(3)|-6.9|与|-0.4|
(4)-—与-—(5)2与-|-9|(6)|-55.2|与|-0.8|
27
713
3-—-—29×
(-3)-3×
615
714
(-+-)×
-(-132)×
12×
863
116
-(—-—+—)×
1207×
[12-(-2)2]
465
4n-(7n+7)n+(2n-5s)+(9s+6n)
5(7m-9)-3m8-(2b+3)+(4b-7)
9(-ab+4a)+(8a-3b)14(abc+2a)-6(5a-7abc)
6(xy-3z)-(-xy+5z)-6(pq-pr)-(2pq+pr)
—x-—=—0.7x+0.5=3.9+7.1x
386
81
—-4x=4-—x6(x-5)+7(x-2)=4
54
11
—(9x-4)=—x-34x-3(17+x)=-9
25
y-1y-2
——=5+——3.5x+3.5(x-7)=20
—(2+2x)=—(3x+1)8(3x+5)=8
77
-1—,5,0,-7.2
—,18.5,-7,-4.1
6
-7—,4.25,0,0.64
(1)-19与10
(2)-4与-1.5(3)|-7.8|与|-2.9|
(4)-—与-—(5)18与-|-9|(6)|-77.5|与|-5.1|
17
4+—-—22×
(-15)+21×
(-15)
545
(-+-)÷
-(-78)×
14÷
436
881
-(—+—+—)×
3437×
[15-(-2)2]
777
9n+(4n-2)3n-(5n+3d)-(3d-8n)
-6(6m-2)+8m10-(2b-6)-(6b-1)
8(ab+3a)+(7a+4b)12(abc+5a)+4(6a+2abc)
4(xy+4z)-(-xy+7z)-8(pq-pr)+(3pq+pr)
—x-—=—0.8x+0.7=2.9-0.3x
363
21
—+8x=9-—x7(x+1)+9(x+3)=13
35
—(8x+1)=—x+55x-4(6+x)=-6
y+2y+1
——=6-——1.5x+4(x+9)=50
36
—(3-2x)=—(5x-5)6(9x+4)=16
49
4—,5,0,-1.6
—,1.5,-10,9.2
-3—,-4.05,8,0.08
(1)-16与8
(2)-3.25与1.25(3)|-4.7|与|2.9|
(4)-—与-—(5)7与-|-8|(6)|-12.5|与|-0.3|
65
2-—-—30×
(-13)+16×
(-13)
912
411
-(-102)×
(-12)
356
476
1502×
[9+(-2)3]
565
-5a+(5a+4)a-(6a-4d)+(6d-4a)
4(8a-4)-3a9-(3y+5)+(9y-8)
5(ab+3a)-(6a-8b)14(abc+2a)-4(5a-4abc)
5(xy+6z)+(-xy-7z)-6(pq-pr)-(5pq+pr)
—x-—=—0.4x+0.4=2.9+6.1x
929
—+8x=6-—x5(x-5)-3(x-1)=6
73
13
—(9x+8)=—x+79x-8(17-x)=-9
65
y+2y-1
——=6+——0.5x+0.5(x-4)=35
35
—(4+4x)=—(2x-2)2(7x-3)=19
83