人教版初一数学上册计算能力专项训练51Word文件下载.docx
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77
5+—+—11×
(-14)+23×
(-14)
912
546
(---)÷
-(-96)×
6÷
(-27)
657
615
-(—+—-—)×
1682×
[2+(-5)3]
764
6、合并同类项。
-4b-(5b-5)b-(5b-7q)+(7q-b)
5(9b+10)+9b5+(7n-3)-(5n-1)
7(ab-3a)-(4a-2b)13(abc+9a)-8(2a-4abc)
9(xy+4z)+(-xy-9z)-5(pq+pr)+(2pq-pr)
7、解方程。
7x1
—x+—=—0.9x-0.1=8.2+4.5x
943
41
—-3x=9+—x4(x+8)+9(x-6)=19
93
11
—(7x-4)=—x-47x-7(17+x)=-4
25
y-2y-2
——=5-——2.5x+8.5(x-9)=50
45
12
—(5-2x)=—(4x+2)3(2x+7)=17
49
4—,-1,0,3.2
-—,-24,13,1.5
1—,0.35,4,-0.56
(1)-17与-4
(2)-2.5与1.5(3)|-9.1|与|3.5|
(4)-—与-—(5)-12与-|-5|(6)|-26.5|与|-2.8|
49
513
3-—-—29×
(-20)-24×
(-20)
915
111
(---)×
-(-156)÷
(-24)
648
512
-(—-—+—)×
362×
[8-(-1)3]
433
-9n-(5n-7)2n+(5n+4z)+(2z-n)
-4(8t-5)-8t9-(9x-4)+(7x-10)
7(-ab+9a)+(8a+9b)8(abc+3a)-5(6a-3abc)
2(xy+5z)+(-xy-4z)-8(pq-pr)+(5pq-pr)
5x1
—x+—=—0.5x+0.6=6.7+3.4x
689
—-4x=1+—x5(x+2)+8(x+4)=10
33
13
—(5x+2)=—x-43x-9(14-x)=-4
35
y+3y+2
——=4-——3x-6.5(x-6)=10
26
—(5+4x)=—(3x-3)8(3x-7)=9
77
-3—,1,0,-4
-—,17,18,9.9
2
4—,-1.75,3,0.16
(1)-16与7
(2)-4与2.5(3)|-9.2|与|-1.7|
(4)-—与-—(5)-16与-|-8|(6)|-46.5|与|-5.1|
89
51
3+—-—14×
(-8)+6×
(-8)
315
171
-(-66)×
4×
(-12)
585
832
-(—+—+—)×
842×
[11+(-5)3]
743
8a-(3a-5)9a-(8a-9c)+(9c+a)
2(6m-7)-3m7+(4n+8)+(3n+2)
4(-ab+7a)-(7a-2b)19(abc-3a)-7(6a+7abc)
2(xy+3z)+(-xy+7z)-4(pq+pr)-(2pq+pr)
—x-—=—0.1x+0.9=2.4-3.9x
363
21
—-6x=6-—x9(x-1)+3(x+6)=4
53
14
—(9x-6)=—x-55x-2(18+x)=-7
95
y+3y+3
——=3+——1x-6(x-5)=15
—(3+3x)=—(2x+3)8(4x+6)=4
2—,-5,0,-4.8
-—,-15,-20,-1.7
9
-6—,-4.05,10,-0.08
(1)-20与-8
(2)-3.25与0.75(3)|-9.3|与|-2.3|
(4)-—与-—(5)-7与-|-4|(6)|-61.3|与|-9.3|
37
4+—-—27×
(-9)+26×
(-9)
918
133
(-+-)×
-(-156)×
10×
(-3)
344
161
1209×
[5+(-5)3]
654
-3n+(9n-9)2n-(2n+8d)-(2d+n)
-7(6n-10)-8n10+(7a-7)+(7a+1)
8(ab+8a)+(6a-2b)15(abc+4a)+7(6a+5abc)
5(xy+6z)-(-xy+7z)-2(pq-pr)+(9pq+pr)
—x-—=—0.2x-0.7=0.5+0.8x
986
—+3x=9+—x5(x-1)+8(x-6)=15
55
—(2x+5)=—x-43x-4(7-x)=-8
65
y-3y-3
——=1+——4.5x+6.5(x-2)=30
46
—(3-4x)=—(4x+3)8(5x+1)=8
67
-4—,-2.5,0,0.8
-—,-14,18,2.8
-3—,1.4,0,-0.16
(1)-14与1
(2)-4.25与2.25(3)|-7.7|与|-3|
(4)-—与-—(5)19与-|-8|(6)|-70.9|与|-3|
55
713
2+—+—15×
(-5)+27×
(-5)
318
681
-(-150)×
18×
574
287
1686×
[16+(-3)3]
378
3m+(8m+9)m+(8m+9z)+(8z-2m)
-6(6t+1)+2t1+(4y-7)-(3y+7)
6(ab+9a)-(5a+8b)14(abc+7a)-5(3a-8abc)
8(xy+4z)-(-xy+4z)-8(pq+pr)+(5pq-pr)
—x+—=—0.1x+0.8=0.6+6.9x
683
—-7x=5-—x9(x-3)-7(x-8)=20
92
—(8x+2)=—x-76x-6(14-x)=-9
y+2y+2
——=1-——3.5x+3.5(x-9)=10
—(4-2x)=—(4x-5)8(6x+6)=19