人教版初一数学上册计算能力专项训练65Word文档格式.docx
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8-—+—18×
(-12)-3×
(-12)
612
496
(---)×
-(-108)÷
2×
(-24)
385
611
-(—-—-—)×
1209×
[14-(-2)3]
583
6、合并同类项。
-2x-(2x-4)4x+(7x+3s)-(6s-8x)
-2(8a+1)-5a7-(7a+5)-(8a-4)
3(-ab-8a)+(6a-9b)9(abc+6a)-2(6a+4abc)
5(xy-9z)-(-xy-8z)-3(pq-pr)-(7pq-pr)
7、解方程。
7x1
—x-—=—0.8x+0.2=0.9-0.6x
969
41
—-2x=6+—x3(x+3)+6(x-5)=7
92
12
—(8x+1)=—x+58x-6(12-x)=-8
55
y-1y+3
——=7-——2.5x+5(x-7)=20
35
—(5-4x)=—(2x-1)5(4x-3)=19
39
3
4—,-2.5,0,7.2
-—,-15,-7,-2.1
4
-2—,-2.6,-2,0.72
9
(1)-9与7
(2)-4.5与2.25(3)|-6.7|与|3.6|
(4)-—与-—(5)-8与-|-6|(6)|-88|与|-7.7|
95
711
3+—-—18×
(-5)-2×
(-5)
615
412
-(-126)×
4×
(-27)
383
469
-(—+—+—)×
1688×
[17-(-5)2]
378
-7x-(6x+2)7x+(4x-8d)-(7d-x)
5(9n-5)+4n7-(4y+7)+(4y-10)
8(ab-3a)+(6a+7b)7(abc+6a)-3(9a-7abc)
6(xy+8z)-(-xy-6z)-8(pq+pr)+(6pq-pr)
5x1
—x+—=—0.2x-0.4=1.2-3.8x
349
21
—-3x=1+—x9(x+1)+8(x-6)=1
32
13
—(5x-1)=—x-98x-7(11+x)=-4
85
y+1y+1
——=1+——2.5x+4.5(x+2)=5
36
—(5+2x)=—(4x-4)8(6x+5)=3
37
4—,-5,0,-0.8
-—,-8,-12,7.2
8
9—,-1.8,-5,-0.4
(1)-20与7
(2)-4与-0.75(3)|-4.8|与|-2.5|
(4)-—与-—(5)-4与-|-3|(6)|-29.5|与|-9.2|
29
2-—-—23×
(-4)-20×
(-4)
915
979
(-+-)×
-(-168)÷
6÷
(-9)
868
444
453×
[7+(-2)2]
533
-9b-(4b+9)b-(6b-4q)-(4q-b)
-8(7t-1)-6t4-(5n-4)-(4n+6)
7(ab-2a)-(7a-8b)9(abc-8a)-2(5a-7abc)
2(xy+5z)-(-xy+5z)-8(pq-pr)+(5pq+pr)
—x-—=—0.5x+0.2=4.6+4.2x
383
—+9x=9-—x6(x-4)-6(x+6)=18
—(7x-8)=—x+92x-6(18-x)=-4
75
y-3y-1
——=7+——1.5x-2(x-9)=15
—(4+2x)=—(3x+1)7(2x-7)=7
83
-2—,1.5,0,-2.4
—,15,5,-9.2
-9—,-0.7,2,-0.72
(1)-14与-1
(2)-3与2(3)|-8.3|与|-2.8|
(4)-—与-—(5)6与-|-6|(6)|-90|与|-9.2|
23
57
8+—+—27×
(-16)+21×
(-16)
767
-(-138)÷
10×
(-21)
878
711
1446×
[15+(-2)3]
646
-8x-(2x-8)8x-(5x+9z)+(7z-x)
6(6a-7)+2a5+(2m+1)-(6m-2)
4(ab+8a)-(4a+4b)19(abc-7a)+9(7a-2abc)
6(xy-6z)-(-xy-4z)-2(pq+pr)-(9pq-pr)
—x-—=—0.8x+0.2=1.8-0.7x
81
—+6x=7+—x5(x-8)+4(x+6)=12
96
14
—(6x-3)=—x+22x-2(17-x)=-8
y+2y+1
——=9-——3.5x-1(x-1)=5
—(1+2x)=—(2x+2)5(4x-6)=10
95
-3—,-1,0,-2.4
—,-10.5,-20,2
6
-3—,-2.85,-2,-0.24
(1)-9与9
(2)-2.5与2.5(3)|-6|与|2.6|
(4)-—与-—(5)-9与-|-5|(6)|-24.2|与|-1.9|
59
17
8+—+—28×
(-6)+16×
(-6)
411
-(-84)÷
16×
536
717
2408×
[4-(-2)2]
658
6x+(5x+6)9x+(7x+8p)+(8p-6x)
4(4n-9)-6n5-(9b+3)-(5b-9)
3(-ab+3a)+(4a+3b)10(abc-6a)+8(2a+5abc)
4(xy+3z)-(-xy+6z)-9(pq-pr)-(2pq-pr)
—x+—=—0.9x-0.3=9.4-7.9x
929
—+4x=5+—x3(x+8)+4(x-9)=15
72
11
—(5x-9)=—x-94x-2(12-x)=-3
25
——=5-——3.5x-4.5(x-2)=50
25
—(3+3x)=—(5x-5)7(3x-6)=18