初一数学上册计算题天天练强烈推荐20Word文档格式.docx
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7+—-—20×
(-16)+25×
(-16)
312
353
(-+-)÷
-(-90)÷
14×
(-3)
464
761
-(—-—-—)×
2803×
[20+(-3)2]
857
6、合并同类项。
-7a-(9a+3)3a+(9a-6q)+(9q-4a)
-4(7a-9)+8a8+(5b-7)+(8b+2)
3(-ab-5a)-(4a-5b)2(abc-5a)-4(6a+9abc)
9(xy+6z)-(-xy-7z)-7(pq+pr)+(3pq-pr)
7、解方程。
5x1
—x-—=—0.3x-0.1=1-2.8x
969
21
—-8x=9-—x9(x-1)+7(x+6)=10
74
11
—(9x-7)=—x-63x-7(5+x)=-8
75
y-3y-3
——=5+——1.5x+2(x+1)=45
36
12
—(1+4x)=—(2x-4)6(3x+1)=18
93
-5—,3.5,0,4.8
—,6,-15,2.3
2
9—,-4.1,3,0.24
(1)-19与-5
(2)-4与-1.25(3)|-6|与|3.1|
(4)-—与-—(5)-7与-|-1|(6)|-27.4|与|-9.9|
55
17
5-—+—15×
(-9)-26×
(-9)
318
144
(---)×
-(-156)×
12×
(-12)
335
741
1204×
[1+(-2)2]
654
3y+(7y+2)9y-(9y-9q)-(4q-y)
6(2s-10)-2s4+(3x-2)-(9x-3)
9(ab+6a)-(3a+8b)8(abc+8a)+9(5a-3abc)
5(xy+4z)-(-xy-4z)-5(pq-pr)+(2pq-pr)
—x-—=—0.1x-0.1=9.3-0.3x
666
81
—-4x=6+—x5(x-3)+9(x-8)=20
97
14
—(7x-2)=—x+67x+7(2+x)=-7
45
y+2y-1
——=9+——2.5x+5.5(x+1)=10
25
—(4-3x)=—(2x-1)5(9x-6)=7
47
4—,-0.5,0,-6.4
—,0.5,-6,7.9
-4—,1.65,2,0.48
(1)-11与-7
(2)-4.25与1.25(3)|-5.4|与|0.7|
(4)-—与-—(5)16与-|-9|(6)|-94.1|与|-6.2|
87
713
5-—+—29×
(-7)+9×
(-7)
916
-(-66)×
6×
(-6)
315
-(—+—+—)×
1283×
[13-(-2)2]
484
5y+(8y+6)9y+(5y+8s)-(8s-y)
-5(7a+1)-3a7+(4a+8)+(7a-5)
6(ab-9a)-(8a-5b)12(abc+8a)-9(8a+2abc)
7(xy-4z)-(-xy+8z)-3(pq-pr)-(5pq-pr)
7x1
—x+—=—0.4x-0.8=2.5-3.2x
363
41
—+8x=6-—x7(x+1)+9(x+6)=1
58
—(9x+8)=—x-79x-8(4-x)=-8
85
y-1y+2
——=6+——2x-3(x+3)=30
26
—(4-4x)=—(2x-1)7(8x+2)=13
5—,2,0,5.6
—,-5.5,-10,-0.7
5—,2.8,-9,-0.32
9
(1)-16与5
(2)-4.25与2.5(3)|-9.2|与|2.5|
(4)-—与-—(5)8与-|-1|(6)|-64.6|与|-2|
77
2+—+—25×
(-15)+4×
(-15)
918
651
-(-90)×
6÷
745
894
2807×
[6-(-3)3]
785
-3m-(5m-3)5m+(9m-2z)+(3z+7m)
6(4n+3)+6n4+(2x+6)+(3x+5)
5(ab-8a)+(8a-3b)14(abc-2a)+4(4a+8abc)
3(xy-9z)+(-xy-3z)-2(pq+pr)-(7pq+pr)
—x-—=—0.4x-0.3=2+4.6x
386
—+8x=9+—x7(x-9)-7(x+5)=16
98
—(8x-1)=—x+23x+2(2-x)=-3
65
y+1y-1
——=4+——1.5x+8(x-3)=25
—(4-4x)=—(4x+2)4(3x-1)=9
63
-2—,1.5,0,-7.2
-—,-18.5,-6,9.6
-5—,-2.35,-4,-0.72
(1)-12与-2
(2)-2.75与-1.5(3)|-5.5|与|-3.3|
(4)-—与-—(5)11与-|-1|(6)|-55.9|与|-7|
49
513
3-—+—13×
(-5)+17×
(-5)
598
-(-60)×
8÷
(-18)
487
511
-(—+—-—)×
1124×
[12+(-4)2]
474
-8a+(7a+4)a+(9a+5p)+(8p+3a)
2(5b-8)+9b9-(2x-5)+(3x+4)
7(-ab+8a)+(2a-9b)5(abc-2a)+5(9a-6abc)
2(xy-7z)+(-xy-9z)-6(pq-pr)-(2pq-pr)
—x+—=—0.3x+0.1=1.6-2x
663
—+9x=8-—x4(x-5)+9(x-1)=20
—(8x+2)=—x+57x-4(15-x)=-2
25
y-3y-2
——=9-——1x-4(x-9)=40
—(3+3x)=—(5x+3)9(2x+1)=10
33