人教版七年级数学上册计算精品天天练73Word下载.docx
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5、计算。
711
9-—-—30×
(-7)-4×
(-7)
915
114
(---)÷
-(-138)÷
16÷
(-27)
885
411
-(—+—-—)×
543×
[14+(-4)2]
336
6、合并同类项。
-7x-(2x-1)x+(2x+8q)+(8q+2x)
7(6n+1)-4n1-(7a+2)-(3a+2)
7(ab+9a)-(7a-2b)10(abc+2a)+9(9a+9abc)
8(xy+3z)+(-xy+7z)-4(pq+pr)-(9pq+pr)
7、解方程。
7x1
—x-—=—0.1x+0.8=8-6.5x
326
81
—-8x=1-—x7(x+9)+6(x-9)=13
53
13
—(2x+1)=—x-73x+9(20+x)=-6
45
y+1y+3
——=6-——4.5x-1.5(x+6)=35
26
12
—(2+2x)=—(4x-5)9(2x-7)=19
77
3
-3—,2.5,0,8
—,13.5,17,2.6
-6—,2.3,0,0.48
(1)-17与7
(2)-4.5与-0.75(3)|-7.2|与|-1.6|
(4)-—与-—(5)-16与-|-1|(6)|-63.5|与|-9.3|
39
77
6+—+—12×
(-6)-9×
(-6)
918
416
(-+-)×
-(-168)×
10÷
(-24)
335
464
-(—+—+—)×
1054×
[10-(-2)3]
573
2y+(9y+9)y-(2y+3z)-(7z-y)
2(2a+5)+9a6+(6b-10)-(8b-3)
3(-ab+5a)+(3a+8b)11(abc+4a)-3(9a-2abc)
5(xy+7z)-(-xy+2z)-9(pq+pr)+(5pq+pr)
5x1
—x-—=—0.6x+0.5=3.4+0.9x
949
41
—-9x=9+—x5(x-7)-5(x+6)=8
95
11
—(3x-5)=—x+32x-4(3+x)=-2
55
y-2y-3
——=7-——3.5x+7.5(x+8)=30
36
—(4-3x)=—(3x-2)8(4x-4)=10
65
1—,-1,0,4
—,1.5,20,7.4
2
3—,2.3,0,0.56
(1)-16与0
(2)-2.75与-1.75(3)|-9.7|与|-2.7|
(4)-—与-—(5)20与-|-2|(6)|-72.2|与|-0.4|
35
511
2+—+—1×
(-14)+28×
(-14)
111
-(-144)×
2×
(-3)
473
879
4481×
[10-(-1)2]
788
2x+(7x+2)6x+(5x+6s)+(2s-x)
-9(3m+10)-6m5+(4a+10)-(3a-4)
6(-ab+5a)+(5a+6b)4(abc+4a)+9(2a+8abc)
3(xy+7z)-(-xy+9z)-7(pq+pr)+(2pq-pr)
—x+—=—0.4x-0.1=2.1-0.7x
363
—-7x=9+—x9(x-1)+2(x+1)=2
—(4x-7)=—x+77x-5(13+x)=-5
35
y+2y+2
——=6-——3.5x-2(x+1)=50
—(5+2x)=—(5x-5)4(2x-2)=8
97
-5—,-0.5,0,-4.8
—,-0.5,15,-9
-8—,4.7,-9,0.48
(1)-20与-3
(2)-4.75与1.75(3)|-9.2|与|-1.1|
(4)-—与-—(5)0与-|-3|(6)|-6|与|-7|
65
57
7+—+—3×
(-1)-27×
(-1)
912
726
-(-60)×
8÷
(-15)
835
116
457×
[15+(-2)2]
-2x-(4x-9)8x+(2x-2p)-(8p+x)
7(4s+10)+8s9-(5n+5)-(6n+8)
6(-ab-6a)+(5a-2b)20(abc-2a)-8(9a-2abc)
8(xy-6z)-(-xy-2z)-5(pq+pr)-(9pq-pr)
—x+—=—0.4x-0.8=7.4-1.9x
923
—+3x=9-—x8(x+5)-9(x+3)=9
93
14
—(6x-6)=—x-95x-7(7-x)=-7
85
y-3y+3
——=4-——5x-3.5(x+3)=50
—(3-4x)=—(5x-5)4(7x-5)=9
67
-3—,-1.5,0,-3.2
—,-8,-11,6.3
-3—,-2.95,8,0.72
9
(1)-15与5
(2)-4与-0.5(3)|-4.5|与|-3|
(4)-—与-—(5)-1与-|-10|(6)|-55.5|与|-3.1|
93
5-—+—21×
(-8)-17×
(-8)
318
762
-(-60)÷
12×
673
155
-(—-—+—)×
1084×
[8-(-5)2]
366
-9b+(2b+7)2b+(4b+2c)+(8c+b)
3(9b-2)+8b3+(2m+1)+(6m+1)