七年级数学上册精品天天练61Word文档下载推荐.docx
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5、计算。
77
6-—-—11×
(-7)+10×
(-7)
915
771
(-+-)×
-(-72)÷
4×
(-18)
685
417
-(—+—+—)×
1443×
[3+(-2)3]
368
6、合并同类项。
7y+(8y+6)5y+(9y+2d)-(8d+y)
9(9a+5)+8a3-(2a-4)-(5a+10)
7(ab+3a)-(7a-5b)5(abc-9a)-3(7a-4abc)
3(xy+3z)+(-xy-9z)-8(pq+pr)+(4pq-pr)
7、解方程。
7x1
—x+—=—0.5x-0.3=1.5-1.7x
943
41
—+9x=7+—x6(x-6)-4(x-8)=11
32
13
—(6x-5)=—x-16x-8(17-x)=-2
25
y+3y-3
——=7-——1.5x+1.5(x+8)=10
36
12
—(3+4x)=—(2x+5)8(6x-7)=8
45
2
3—,3.5,0,-7.2
-—,-7.5,9,8
3
9—,3.05,-4,0.48
(1)-17与4
(2)-2.75与0.75(3)|-5.1|与|-0.4|
(4)-—与-—(5)18与-|-5|(6)|-8.1|与|-2.6|
59
513
1+—+—25×
(-14)+26×
(-14)
312
514
(---)×
-(-180)÷
6÷
455
121
-(—+—-—)×
634×
[15+(-1)3]
337
8x+(8x+6)x+(5x+7d)+(8d-9x)
-7(2b+8)+2b6-(3y+9)+(4y+2)
4(ab-3a)-(2a+8b)16(abc-7a)-4(2a-4abc)
6(xy-9z)-(-xy+5z)-6(pq-pr)-(9pq-pr)
—x+—=—0.9x-0.6=9-9.9x
926
81
—-4x=6-—x4(x+1)+7(x+1)=18
56
—(3x-1)=—x-24x+2(10-x)=-3
65
y+2y-3
——=8-——2x+4.5(x-6)=50
46
—(4+2x)=—(2x+4)4(5x-9)=1
85
-1—,3,0,4
-—,-16.5,-14,3.5
5—,-2.1,-4,-0.32
(1)-13与3
(2)-2.25与1(3)|-8|与|3.4|
(4)-—与-—(5)2与-|-9|(6)|-6.2|与|-5.7|
25
4-—-—2×
(-16)-28×
(-16)
612
136
-(-114)÷
16÷
(-21)
545
696
-(—-—+—)×
2809×
[10-(-3)2]
785
-2a-(9a+7)4a-(7a-5q)+(9q-7a)
2(6a+6)+3a5+(2a-1)+(8a+3)
5(-ab-9a)+(5a+8b)16(abc-5a)+7(2a+6abc)
8(xy-5z)-(-xy+6z)-2(pq-pr)+(4pq-pr)
—x-—=—0.3x+0.4=6.1+1.3x
363
—+9x=3+—x2(x+9)+8(x-6)=14
54
11
—(7x-7)=—x-85x+7(16+x)=-6
y+1y-1
——=6-——1x+6(x+1)=20
—(4-2x)=—(3x-1)2(6x+6)=16
63
-3—,-0.5,0,0.8
-—,-4.5,10,-6.3
4—,3.15,6,0.8
(1)-11与-2
(2)-4与1.5(3)|-4.7|与|-1.5|
(4)-—与-—(5)19与-|-2|(6)|-45.4|与|-6|
87
111
6-—+—10×
(-12)+18×
(-12)
361
(---)÷
-(-78)×
16×
(-9)
476
711
3849×
[11+(-5)2]
886
7x+(3x-4)4x+(7x-5s)-(6s+x)
8(8n-6)+6n8-(6y+10)-(5y+9)
6(-ab+7a)-(6a-9b)2(abc+7a)+6(8a+2abc)
4(xy-3z)-(-xy-7z)-9(pq-pr)-(8pq+pr)
5x1
—x+—=—0.6x-0.1=3.7+1.3x
663
—+2x=7+—x4(x+1)-7(x-6)=13
92
—(6x+4)=—x-27x-5(11+x)=-4
55
y-2y+2
——=9+——2.5x-0.5(x+6)=30
45
—(2-3x)=—(5x-2)2(6x+2)=12
35
5—,2,0,-0.8
—,-6,-11,-8.4
7—,-1.45,-2,0.24
(1)-12与10
(2)-3.25与2.5(3)|-9.6|与|2.6|
(4)-—与-—(5)-16与-|-9|(6)|-64.6|与|-8.5|
63
711
4+—-—3×
(-12)-28×
191
(-+-)÷
-(-90)÷
12×
484
716
4488×
[10+(-2)3]
887
-7m+(3m+4)m+(9m-2c)+(2c-m)
3(2m-1)+3m5-(2y-1)-(7y+10)
9(ab-3