人教版初一数学上册计算能力专项训练99Word文档下载推荐.docx
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113
2+—-—13×
(-12)-5×
(-12)
612
744
(-+-)×
-(-60)÷
12÷
(-27)
833
851
-(—+—+—)×
844×
[8-(-4)3]
743
6、合并同类项。
-3b-(6b+2)4b+(8b+8q)+(9q-b)
6(6n+6)+7n4+(2b-4)+(6b+7)
7(-ab+4a)+(4a-6b)9(abc+9a)-8(5a+5abc)
7(xy-3z)+(-xy-5z)-2(pq+pr)+(9pq-pr)
7、解方程。
7x1
—x+—=—0.5x-0.6=4-8.1x
649
81
—-3x=8-—x3(x+5)-9(x-8)=17
98
11
—(4x-3)=—x-28x+2(4+x)=-7
25
y-1y+1
——=1-——1x-1.5(x+3)=30
46
12
—(3+4x)=—(3x-3)8(4x+2)=13
23
3
-5—,-4,0,6.4
—,-5,10,-3.4
6—,-2.5,4,0.16
7
(1)-14与-4
(2)-3.25与2.5(3)|-3.9|与|1|
(4)-—与-—(5)0与-|-9|(6)|-8.1|与|-1|
55
57
9-—+—4×
(-10)+13×
(-10)
318
611
(-+-)÷
-(-72)÷
6÷
(-3)
546
519
-(—-—-—)×
2881×
[18+(-5)2]
668
-9b-(4b+8)b+(8b-2z)-(3z-b)
7(5t-1)-9t7-(3n-7)-(3n-9)
3(ab+2a)-(8a-5b)2(abc-2a)+6(7a-8abc)
6(xy-4z)-(-xy+9z)-8(pq-pr)+(8pq+pr)
—x+—=—0.7x+0.7=3.6+6.9x
329
41
—+8x=8-—x9(x+9)+8(x-2)=6
94
—(7x+6)=—x+68x-6(16-x)=-6
45
y+1y+1
——=7+——5x-7(x-4)=35
26
—(1+2x)=—(3x+5)6(7x+4)=9
69
3—,-0.5,0,0.8
—,-19,16,2.8
-6—,-4.4,2,0.56
(1)-12与-5
(2)-2.25与-1.75(3)|-8.7|与|0.3|
(4)-—与-—(5)11与-|-9|(6)|-62.2|与|-8.9|
37
711
8-—+—11×
(-20)-17×
(-20)
918
591
-(-174)÷
4÷
(-15)
684
-(—+—-—)×
2563×
[13-(-5)3]
488
-9y-(7y+5)y-(9y+9z)-(3z-7y)
2(7m-8)-3m1+(8a+6)+(6a-10)
8(-ab-8a)-(4a-3b)17(abc-7a)+4(8a+4abc)
6(xy-9z)+(-xy-5z)-9(pq+pr)-(7pq-pr)
—x-—=—0.4x-0.9=6.1-3.7x
983
21
—+4x=8-—x2(x-9)-7(x-5)=7
55
13
—(6x+9)=—x-77x+9(13-x)=-2
35
y-3y-1
——=6+——2x+7(x+6)=10
—(3+2x)=—(4x+5)4(2x+9)=2
39
-5—,3.5,0,5.6
—,7.5,20,-0.7
9—,0.55,1,0.64
(1)-16与-2
(2)-2.75与-1.5(3)|-8.2|与|3.7|
(4)-—与-—(5)-8与-|-1|(6)|-71.7|与|-4.5|
17
5+—-—3×
(-7)-24×
(-7)
315
849
(---)÷
-(-144)×
4×
(-18)
758
161
-(—-—+—)×
2801×
[5+(-5)3]
-7n-(4n+9)5n+(4n+4q)-(4q-6n)
3(8a+10)+7a8-(8x-10)+(4x-4)
6(-ab+7a)+(6a-3b)15(abc-3a)-9(2a-8abc)
3(xy+2z)-(-xy+6z)-5(pq-pr)-(2pq+pr)
—x+—=—0.8x-0.8=8.4-5.5x
963
—-8x=8-—x8(x+4)+2(x+3)=5
37
—(7x+2)=—x+17x-4(7-x)=-5
y-1y-2
——=4+——4x-8(x+3)=10
25
—(3+3x)=—(2x+2)5(2x-4)=3
99
-5—,-3,0,2.4
-—,0.5,-14,-7.9
5—,-4.45,-7,0.08
(1)-10与-1
(2)-3.5与2(3)|-7.3|与|1.5|
(4)-—与-—(5)-1与-|-9|(6)|-20.4|与|-3.8|
63
11
1+—+—20×
(-6)-18×
(-6)
615
399
-(-174)×
(-24)
421
756×
[18+(-1)2]
535
-7x+(9x-7)x+(8x+2c)+(3c+6x)
-5(9a+3)+6a9+(5a-1)-(3a+5)
2(ab+6a)+(7a-8b)11(abc-4a)-4(5a+3abc)
9(xy+6z)+(-xy+6z)-4(pq+pr)-(5pq+pr)
—x+—=—0.8x-0.2=5.1+4.9x
663
—+2x=9-—x7(x-9)+9(x-7)=18
—(3x+6)=—x+16x+9(19+x)=-1
65
y-2y-1
——=3-——2x+5(x-8)=25
—(4-2x)=—(4x+5)9(9x-9)=9
33