人教版初一数学上册计算能力专项训练47Word格式.docx
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25
5、计算。
77
4+—+—18×
(-11)-15×
(-11)
912
746
(---)÷
-(-60)÷
8×
(-3)
857
786
-(—-—-—)×
2805×
[9+(-2)2]
875
6、合并同类项。
6b-(3b-2)3b+(9b-8c)-(8c-6b)
-9(2b-9)-9b6-(6y+6)+(4y-5)
3(ab+2a)+(8a-9b)7(abc-6a)+3(7a-7abc)
4(xy-6z)-(-xy-5z)-2(pq+pr)-(3pq+pr)
7、解方程。
5x1
—x-—=—0.7x-0.8=5.4+3.5x
963
21
—-8x=6+—x8(x+8)-8(x-4)=14
72
14
—(2x-7)=—x-42x+5(9+x)=-6
55
y+3y-1
——=3-——4.5x-9.5(x-7)=10
36
12
—(5-2x)=—(5x-2)7(4x+6)=12
89
3—,2.5,0,6.4
-—,-15.5,1,-6.3
-9—,0.5,-7,-0.4
(1)-17与-6
(2)-3.75与0.5(3)|-4|与|-3.5|
(4)-—与-—(5)10与-|-2|(6)|-23.7|与|-9.5|
59
113
7-—+—30×
(-2)-27×
(-2)
615
661
(---)×
-(-168)×
14÷
558
411
-(—+—-—)×
3204×
[20-(-1)2]
588
-6y-(8y-9)5y+(9y+3q)+(2q+y)
9(6b-3)-5b2-(5n-7)-(7n-3)
9(-ab-4a)+(4a+2b)10(abc+2a)+3(4a-2abc)
5(xy+4z)+(-xy-9z)-9(pq+pr)-(7pq+pr)
—x+—=—0.4x-0.2=5.6-3.6x
369
81
—+5x=7-—x8(x-5)-2(x+2)=4
—(6x-1)=—x-36x+9(8+x)=-6
65
y-1y-1
——=2+——4x-0.5(x-8)=20
—(1+4x)=—(3x+3)4(3x+4)=14
69
4—,2.5,0,7.2
—,18.5,-6,-7.3
8
-7—,-1.15,-5,0.64
(1)-10与7
(2)-3.75与2.25(3)|-7.8|与|-0.6|
(4)-—与-—(5)-20与-|-6|(6)|-81.1|与|-7.5|
39
57
8-—+—9×
(-9)-26×
(-9)
318
191
(-+-)×
-(-168)÷
(-6)
386
612
1051×
[9-(-1)2]
753
9n+(6n-9)8n-(2n-2p)+(3p-n)
5(9m+9)+2m5+(5b+10)+(3b+6)
4(ab-8a)-(4a+7b)12(abc-8a)-8(7a+6abc)
8(xy-7z)-(-xy-7z)-7(pq+pr)-(8pq+pr)
7x1
—x-—=—0.5x+0.6=8.3+7.7x
649
41
—-7x=9+—x6(x-1)+7(x-6)=7
79
11
—(3x+9)=—x-18x+9(8-x)=-5
45
y-2y-2
——=5-——2.5x+1.5(x-3)=50
—(4-4x)=—(3x+1)8(4x+4)=3
-3—,3.5,0,-5.6
-—,-11,9,7.5
2—,-4.25,4,0.72
(1)-14与3
(2)-5与-1.75(3)|-6.8|与|2.7|
(4)-—与-—(5)6与-|-10|(6)|-79.7|与|-3.4|
99
17
2-—+—7×
(-6)+3×
312
143
-(-72)×
4×
(-18)
634
111
1922×
[18-(-3)2]
684
6m+(5m-2)8m-(9m+7p)-(5p-2m)
9(9a-2)-2a1+(2m+6)-(8m+4)
3(-ab+2a)+(6a+3b)4(abc+6a)-4(2a-7abc)
8(xy+8z)-(-xy+4z)-9(pq-pr)+(9pq+pr)
—x-—=—0.6x+0.4=8.5-6.8x
329
—-5x=6-—x7(x+4)+2(x-6)=9
—(2x+4)=—x-62x+2(18+x)=-8
35
y-3y+3
——=8-——0.5x+2.5(x-8)=40
—(2-2x)=—(3x+1)5(8x-7)=10
63
2
3—,0.5,0,-4.8
-—,12,-10,-1.9
6—,2.05,1,-0.08
7
(1)-13与-4
(2)-2.75与1.75(3)|-5.5|与|-0.2|
(4)-—与-—(5)-3与-|-5|(6)|-71.9|与|-0.1|
27
51
2-—-—7×
(-15)-11×
(-15)
716
-(-90)÷
4÷
(-12)
741
907×
[15+(-4)2]
635
-4m+(6m+8)m+(2m+4c)+(9c-m)
-2(5m+2)-9m3+(5x+8)+(