人教版七年级数学上册计算精品天天练49Word格式.docx
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65
5、计算。
713
3+—-—5×
(-4)-8×
(-4)
318
111
(---)×
-(-114)×
12÷
(-9)
356
157
-(—-—-—)×
2529×
[9-(-1)3]
766
6、合并同类项。
-4n+(7n-6)5n-(2n-5s)-(6s-3n)
-4(3t-9)+8t9+(6b-5)-(7b+10)
6(-ab+6a)-(2a+9b)15(abc-9a)-4(2a-5abc)
3(xy+7z)-(-xy+4z)-7(pq+pr)+(8pq+pr)
7、解方程。
5x1
—x+—=—0.8x+0.1=3.9+0.5x
983
81
—+7x=7-—x7(x+6)-2(x-6)=16
39
13
—(7x+4)=—x-23x+3(11-x)=-1
35
y+2y+1
——=2-——0.5x-10(x+4)=25
26
12
—(4+4x)=—(4x-3)9(7x+3)=8
55
3—,-4,0,1.6
—,-10.5,19,-5.4
4
-5—,-0.7,5,0.56
(1)-13与4
(2)-2.75与1.25(3)|-7|与|0.3|
(4)-—与-—(5)5与-|-10|(6)|-67.2|与|-6.8|
85
711
4+—-—8×
(-16)+5×
(-16)
915
191
(-+-)÷
-(-60)÷
8×
(-15)
888
461
-(—+—-—)×
1059×
[15-(-1)3]
375
8y-(7y+8)y+(7y+5c)-(2c-2y)
-8(2s-3)+5s6-(3n-8)-(2n-7)
7(ab+3a)-(8a+4b)17(abc+9a)-7(3a+5abc)
7(xy-9z)+(-xy+7z)-2(pq+pr)+(9pq+pr)
—x-—=—0.9x+0.5=9.7-6.6x
326
—-8x=5-—x9(x+8)+8(x+6)=20
94
14
—(9x+1)=—x+27x+2(4+x)=-6
y+3y+3
——=4+——2x+1.5(x+2)=45
45
—(3+4x)=—(5x+4)5(4x-5)=5
29
-1—,4.5,0,3.2
-—,-25,-2,8.8
6
-7—,0.9,9,0.56
7
(1)-10与2
(2)-4.5与-0.75(3)|-3.9|与|-0.6|
(4)-—与-—(5)-19与-|-8|(6)|-19.1|与|-7.9|
69
3+—+—17×
(-9)-10×
312
636
4÷
(-6)
545
451
-(—-—+—)×
901×
[14+(-2)3]
365
3n-(9n-8)n-(9n-9p)-(4p+n)
6(2s-3)+8s10+(5b-5)+(4b-5)
9(ab+6a)+(7a-2b)7(abc-8a)+9(8a-3abc)
7(xy+6z)+(-xy+3z)-4(pq-pr)+(9pq+pr)
—x+—=—0.5x-0.7=0.3-1.6x
966
41
—+8x=1-—x8(x+3)-3(x-7)=9
52
—(2x+4)=—x-84x+2(11-x)=-7
65
y+2y+3
——=9-——5x-8(x-8)=50
25
—(4-4x)=—(4x-2)5(4x-9)=3
69
1—,3.5,0,0.8
-—,-19.5,19,9
3—,0.95,-7,0.64
(1)-12与10
(2)-3.25与0.75(3)|-9.6|与|-3|
(4)-—与-—(5)13与-|-5|(6)|-74.8|与|-5.5|
97
77
7+—-—18×
(-19)+22×
(-19)
724
(-+-)×
-(-102)÷
16×
(-27)
835
141
-(—+—+—)×
1681×
[16+(-5)2]
738
2a+(4a+2)a+(8a-9z)-(4z-9a)
8(6b+2)+2b3-(2a+4)-(3a-10)
8(ab+5a)+(4a+5b)8(abc-5a)+8(6a+5abc)
4(xy-4z)+(-xy+6z)-2(pq+pr)+(7pq+pr)
—x-—=—0.4x+0.9=5.3-8.3x
929
—+6x=8-—x4(x-8)+8(x+5)=16
32
—(3x-5)=—x-43x+4(7-x)=-8
75
y+3y-2
——=6-——2.5x+5(x+5)=15
36
—(4+2x)=—(5x+3)3(9x+4)=1
67
3—,5,0,8
-—,-12,6,4.8
-2—,4.8,-5,-0.56
(1)-12与-7
(2)-3.75与2.25(3)|-8|与|-1.5|
(4)-—与-—(5)-1与-|-3|(6)|-77.8|与|-0.7|
23
2-—+—15×
(-17)-19×
(-17)
315
634
(---)÷
-(-126)÷
341
489×
[10-(-2)2]
434
4a+(8a-8)8a+(5a+8c)+(3c-a)
7(6n+8)-2n4-(3y-8)-(6y-8)