初一数学上册计算题天天练精品57Word下载.docx
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初一数学上册计算题天天练精品57Word下载.docx
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-(—-—-—)×
1053×
[11-(-3)3]
573
6、合并同类项。
-4y+(6y+7)y+(4y-9z)-(4z+8y)
2(7a+2)-4a3+(8x+9)+(2x-2)
9(-ab-9a)+(9a-6b)13(abc+7a)-3(8a-4abc)
5(xy+4z)+(-xy-5z)-9(pq+pr)-(8pq+pr)
7、解方程。
5x1
—x+—=—0.6x+0.8=4.8-2.5x
966
21
—+2x=4-—x5(x-9)-5(x+3)=18
73
12
—(4x+3)=—x+17x+5(20-x)=-9
55
y-3y-3
——=6-——3.5x-6(x+5)=25
36
—(5+4x)=—(5x-1)2(5x+6)=4
49
-2—,-4,0,6.4
—,-9,-18,2.8
5—,-0.35,-7,-0.24
(1)-15与-5
(2)-4与-0.25(3)|-8.7|与|-2.3|
(4)-—与-—(5)-16与-|-5|(6)|-41.8|与|-1.2|
55
71
9+—+—11×
(-4)+30×
(-4)
315
572
(---)×
-(-90)×
2×
(-6)
683
887
3929×
[6+(-5)2]
778
9y-(7y-3)5y-(7y+4d)-(4d-y)
5(6b-8)-8b1+(7y-1)-(4y-1)
5(ab+9a)-(4a+3b)12(abc-4a)-7(4a+4abc)
8(xy-8z)-(-xy+2z)-7(pq+pr)+(9pq+pr)
—x-—=—0.2x-0.6=1.3-1.3x
649
81
—+4x=2-—x7(x-1)+3(x-8)=1
72
14
—(5x-8)=—x-85x+8(12+x)=-5
35
y+2y-2
——=1-——0.5x+1.5(x+7)=5
46
—(2-4x)=—(5x+2)4(5x+9)=9
57
1—,4,0,4
-—,-19.5,-11,3.1
6
6—,0.5,1,-0.4
7
(1)-19与8
(2)-3与1.5(3)|-4.6|与|-3.2|
(4)-—与-—(5)2与-|-4|(6)|-0.7|与|-1.6|
43
17
6+—-—19×
(-10)-16×
(-10)
612
-(-180)×
18×
345
641
2457×
[5+(-1)3]
757
4a-(2a+9)a-(8a-4c)+(6c+a)
-7(5a+2)-4a3+(7a-7)+(3a+10)
7(ab-4a)+(6a+6b)6(abc-7a)-9(7a-5abc)
2(xy-7z)+(-xy+3z)-5(pq+pr)+(8pq+pr)
7x1
—x-—=—0.6x-0.2=8.9+8.5x
343
—-3x=8+—x9(x-9)+2(x+4)=16
75
13
—(6x-3)=—x-82x+9(17-x)=-2
95
y-2y-1
——=5-——4.5x+4(x+1)=35
45
—(3+2x)=—(5x-5)7(9x-5)=13
29
-5—,-3.5,0,3.2
-—,21,-17,-4.9
4
5—,-2.55,-8,-0.56
(1)-16与-2
(2)-5与-0.75(3)|-4.7|与|-1.8|
(4)-—与-—(5)13与-|-4|(6)|-50.6|与|-6.6|
83
4+—-—29×
(-10)-10×
615
896
-(-162)×
14×
(-24)
785
468
-(—+—+—)×
1479×
[2+(-1)2]
377
7a-(3a-1)7a-(9a+6q)-(6q+a)
9(9b+1)+7b1+(7n-3)-(7n+7)
6(-ab+2a)+(8a-4b)4(abc-7a)+9(4a-9abc)
6(xy-2z)-(-xy+4z)-6(pq-pr)-(4pq-pr)
—x-—=—0.5x-0.2=1.9-2.2x
926
41
—+4x=4-—x5(x-8)-9(x+3)=17
79
—(9x-2)=—x+73x-8(5+x)=-8
y+2y+1
——=4+——2x+4(x-2)=10
—(2+4x)=—(5x+4)4(6x+6)=10
-4—,1,0,4.8
—,-3,4,-5.4
7—,-1.1,6,0.32
(1)-12与7
(2)-2.75与-0.5(3)|-5.5|与|1.2|
(4)-—与-—(5)9与-|-6|(6)|-59|与|-2.5|
29
77
3+—+—16×
(-10)-15×
517
-(-66)×
12÷
(-15)
678
617
-(—-—+—)×
3922×
[12+(-5)3]
2a-(7a+3)a-(6a+2s)+(4s+a)
7(6b+6)+8b4+(6n+9)-(5n-7)
7(-ab+7a)-(5a-8b)10(abc+3a)+6(3a+7abc)
4(xy+4z)+(-xy-2z)-2(pq+pr)+(9pq-pr)
—x+—=—0.6x+0.3=1.8+8.1x
349
—-2x=7-—x2(x+5)+9(x+4)=2
—(9x+1)=—x-77x-7(20-x)=-3
y-1y-1
——=8+——1x-10(x-1)=30
—(5-2x)=—(3x-1)6(6x+2)=17
27
5—,2.5,0,-7.2
-—,-5.5,-11,0.5
8
3—,3.85,5,0.64
(1)-18与8
(2)-3与-0.75(3)|-9.2|与|3.8|
(4)-—与-—(5)15与-|-8|(6)|-71.4|与|-5.5|
65
6+—+—4×
(-8)+29×
618
114
-(-180)÷
10÷
373
371
-(—+—-—)×
1925×
[16-(-5)2]
486
6b+(6b+1)b+(3b-9d)-(2d-b)
-8(3n-10)+8n2-(9x-6)-(2x+8)
4(-ab-2a)-(7a-8b)3(abc+9a)+7(2a-2abc)
8(xy+2z)+(-xy+7z)-4(pq+pr)-(5pq+pr)
—x+—=—0.5x-0.3=9.4-8.7x
346
—-7x=1+—x5(x+6)+4(x+8)=20
11
—(9x+5)=—x+47x+5(14+x)=-5
y+2y-3
——=7-——1.5x+9.5(x-7)=15
—(3-3x)=—(5x+5)4(3x+6)=10
33
-2—,2,0,5.6
-—,-5,17,-6.3
6—,-1.25,-5,0.4
(1)-16与-5
(2)-3与-2(3)|-9.2|与|2.2|
(4)-—与-—(5)-13与-|-4|(6)|-40.4|与|-5.8|
49
5+—+—10×
(-12)-9×
(-12)
269
(-+-)÷
-(-150)÷
2÷
358
1287×
[8+(-3)2]
448
-5m+(5m+2)m+(9m-4d)+(3d-7m)
7(5s+9)+3s9+(5n-10)+(2n+7)
9(ab+8a)-(4a+4b)9(abc-7a)-9(7a-5abc)
4(xy-5z)+(-xy+7z)-9(pq+pr)+(6pq-pr)
—x-—=—0.2x-0.2=6.7-1x
669
—-9x=5-—x4(x-5)+3(x-5)=14
98
—(3x+3)=—x+85x-4(4+x)=-4
y+2y-1
——=7+——2.5x+7(x+4)=10
—(3+2x)=—(4x-4)2(4x+3)=12
-1—,0.5,0,8
—,3.5,-16,-5.1
3—,4.75,-6,-0.56
(1)-14与10
(2)-4.5与-1.5(3)|-9.5|与|-3.4|
(4)-—与-—(5)7与-|-7|(6)|-59.5|与|-8.2|
511
6+—-—8×
(-14)-17×
(-14)
918
414
8×
(-9)
553
716
4487×
-3b+(8b-4)b+(4b-3c)-(7c-9b)
7(9b-5)+3b3+(3m-6)+(5m+6)
6(ab+5a)-(4a-8b)7(abc+6a)-9(4a+2abc)
4(xy-7z)-(-xy+8z)-2(pq-pr)+(6pq+pr)
—x+—=—0.3x-0.7=8.9-3.6x
323
—+7x=4-—x9(x+2)+5(x+8)=5
—(3x-2)=—x+14x+4(10+x)=-1
25
y+1y+1
——=2+——2.5x-6.5(x-4)=40
25
—(4-4x)=—(3x+4)7(4x+4)=20
77
-1—,-4.5,0,6.4
-—,20,13,6.6
-3—,4.5,7,0.32
(1)-16与-5
(2)-2.75与1.25(3)|-6.2|与|-3.4|
(4)-—与-—(5)-20与-|-2|(6)|-15.1|与|-3.4|
39
713
6+—+—24×
(-5)-8×
(-5)
733
-(-144)×
(-27)
844
311
964×
[9+(-1)2]
438
3n-(4n+1)n-(8n-5s)-(7s+7n)
9(2t+9)+9t2-(5b-8)+(9b+5)
6(ab+3a)-(2a+3b)14(abc-5a)+2(3a-2abc)
8(xy+2z)-(-xy-4z)-5(pq+pr)-(6pq-pr)
—x+—=—0.9x+0.3=4.5+7.9x
—-7x=1-—x6(x-1)+7(x+3)=8
93
—(9x+3)=—x-78x+2(19-x)=-5
——=1-——2.5x+3(x+5)=50
—(4+4x)=—(2x-2)8(7x+4)=20
-1—,-2.5,0,3.2
—,10,-4,0.9
-3—,1.05,2,0.4
(1)-9与-3
(2)-3.75与1(3)|-7|与|-1.4|
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