人教版初一数学上册计算能力专项训练46Word文档格式.docx
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11
7-—+—5×
(-1)+30×
(-1)
315
865
(-+-)×
-(-72)÷
18×
(-3)
754
111
-(—-—-—)×
2454×
[18-(-3)2]
775
6、合并同类项。
-4a-(2a+3)a-(5a+7z)-(2z-7a)
-5(9n-8)-6n6-(6n+3)+(2n-3)
8(ab+8a)+(2a+8b)12(abc+2a)+5(5a-2abc)
7(xy-3z)+(-xy-8z)-4(pq+pr)+(8pq-pr)
7、解方程。
5x1
—x+—=—0.7x-0.8=3.1-8.2x
923
21
—-5x=3-—x9(x+9)-5(x+9)=12
34
13
—(8x-3)=—x-72x+6(1-x)=-9
35
y+3y+1
——=5+——2.5x+6.5(x-6)=40
46
12
—(3-2x)=—(5x+5)9(6x+8)=2
59
5—,-2.5,0,5.6
—,18.5,0,-0.5
3
2—,5,5,0.48
(1)-16与-2
(2)-3.75与-1.25(3)|-7.1|与|0.5|
(4)-—与-—(5)6与-|-2|(6)|-60.8|与|-5.5|
73
8-—-—21×
(-3)+21×
615
241
(---)÷
-(-114)÷
12×
333
731
-(—-—+—)×
1923×
[17+(-1)2]
846
4b-(6b+7)b+(3b-9z)+(7z-8b)
6(4a+8)-7a5+(8y+7)+(6y-7)
9(ab-3a)+(3a+9b)14(abc-2a)-2(4a-5abc)
2(xy-9z)+(-xy-6z)-7(pq-pr)+(7pq-pr)
—x+—=—0.7x+0.9=6.8+6x
926
81
—+9x=9+—x5(x-4)+8(x-9)=18
36
14
—(5x-9)=—x+33x+3(9-x)=-6
75
y-2y+2
——=1-——2.5x-0.5(x-9)=30
—(3+3x)=—(4x-2)3(9x-8)=5
73
-2—,-1,0,-5.6
-—,-18.5,20,7.6
-8—,-2.6,-5,-0.64
(1)-14与-5
(2)-4.5与1.25(3)|-8|与|-0.5|
(4)-—与-—(5)1与-|-10|(6)|-72|与|-9.4|
23
511
2-—+—2×
(-11)-28×
(-11)
918
331
(-+-)÷
-(-78)÷
8×
(-21)
445
161
1477×
[14+(-3)3]
377
-4b+(4b+8)b-(3b+9c)+(9c-b)
-5(7a-10)+9a7+(5m+5)-(3m-7)
4(ab-9a)-(3a-7b)19(abc-3a)+3(8a+8abc)
2(xy+2z)-(-xy+4z)-2(pq-pr)+(3pq-pr)
—x+—=—0.4x-0.5=6.1+7.1x
686
—+4x=4-—x2(x+7)-3(x+4)=7
58
11
—(5x+8)=—x+85x+6(10-x)=-3
y+1y-1
——=1+——5x-8(x-4)=5
36
—(5-4x)=—(3x+3)2(4x+2)=14
65
4
-2—,-2,0,7.2
—,-15.5,-7,-0.5
-2—,1.5,1,-0.16
9
(1)-14与6
(2)-2.75与0(3)|-4.8|与|-1.3|
(4)-—与-—(5)-5与-|-3|(6)|-87.9|与|-2.2|
57
77
7+—+—28×
(-2)+27×
(-2)
741
-(-132)×
6÷
(-15)
853
515
1929×
[4-(-4)3]
684
-8m+(6m-4)m+(7m+3p)+(7p+m)
7(2n+8)+8n4-(5a+9)+(8a+10)
6(ab+8a)+(2a+5b)13(abc-9a)-5(9a-4abc)
7(xy-3z)+(-xy+7z)-9(pq+pr)-(5pq-pr)
—x+—=—0.2x-0.3=6-8x
683
41
—+5x=6-—x8(x+9)+9(x-7)=18
52
—(5x-5)=—x+57x-3(14+x)=-1
95
y+3y+2
——=1-——5x+1(x+4)=45
—(1-3x)=—(5x+3)8(9x-2)=8
37
-5—,4,0,-6.4
-—,-0.5,-13,-2.5
-3—,3.9,-7,0.72
(1)-16与-1
(2)-4.25与-1.25(3)|-6.2|与|3.3|
(4)-—与-—(5)10与-|-9|(6)|-69.6|与|-8.1|
37
513
8-—-—14×
(-2)+6×
612
311
(---)×
-(-156)÷
468
112
-(—+—+—)×
849×
[17+(-2)2]
743
-2b+(2b+8)b+(6b+9q)+(2q+7b)
-4(8s-6)+7s9-(2a+10)+(9a+5)