七年级数学上册精品天天练110Word文件下载.docx
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5、计算。
77
7+—+—12×
(-9)-21×
(-9)
315
257
(-+-)×
-(-114)÷
2÷
(-24)
368
161
-(—+—+—)×
2458×
[3-(-1)3]
757
6、合并同类项。
6a+(2a-3)8a+(4a+4q)-(8q-5a)
-3(7m-2)-6m9+(9x+10)+(8x-1)
6(-ab+9a)-(3a+4b)18(abc-5a)+7(4a-8abc)
3(xy-6z)+(-xy+2z)-8(pq+pr)-(7pq+pr)
7、解方程。
7x1
—x-—=—0.8x-0.6=0.8+9.5x
983
21
—+8x=1+—x3(x-3)+2(x+9)=15
59
14
—(5x-8)=—x+46x+7(6-x)=-9
35
y-3y+2
——=2+——3x-9.5(x+4)=35
26
12
—(1+2x)=—(5x-4)7(2x-8)=13
57
-1—,4,0,1.6
—,10,11,-9.8
4—,-4.7,-1,-0.32
7
(1)-15与9
(2)-3.75与-1.75(3)|-5.8|与|-2.8|
(4)-—与-—(5)13与-|-8|(6)|-16.8|与|-7.5|
93
57
7-—+—30×
(-5)-28×
(-5)
615
411
-(-162)÷
6×
(-18)
378
745
-(—-—-—)×
962×
[16-(-5)2]
834
-7m+(5m+6)2m+(5m-5s)-(3s-7m)
9(8m-2)-9m8+(4b+7)+(8b+7)
2(-ab-5a)-(2a-3b)9(abc-4a)-3(3a+8abc)
6(xy-8z)-(-xy+7z)-4(pq-pr)-(8pq+pr)
—x-—=—0.9x+0.1=6+9.8x
689
41
—+4x=3-—x9(x-5)+3(x+7)=16
98
11
—(5x-9)=—x+47x+4(1-x)=-6
25
y-2y+2
——=2-——1x-6(x-4)=20
35
—(5+2x)=—(3x+1)8(6x+4)=1
-2—,3.5,0,2.4
—,15,-5,-9.1
2—,-3.3,4,-0.56
(1)-11与-5
(2)-5与1.5(3)|-5.9|与|2|
(4)-—与-—(5)-15与-|-10|(6)|-14.5|与|-2.6|
67
9+—-—25×
(-16)-24×
(-16)
612
474
(-+-)÷
-(-150)×
(-15)
585
115
3367×
[8-(-1)3]
786
-6b-(3b+9)b-(6b-5d)-(4d-6b)
8(7a+8)+7a10+(9n+3)-(6n+5)
3(ab+6a)-(2a-6b)5(abc-5a)-3(2a+9abc)
9(xy-3z)+(-xy-4z)-4(pq+pr)+(5pq+pr)
—x+—=—0.1x-0.9=5.9-0.1x
363
81
—+4x=4+—x6(x-4)-8(x-4)=12
97
13
—(7x+4)=—x+89x+7(2+x)=-2
y-1y-2
——=4+——3.5x-7(x+1)=30
36
—(5-3x)=—(3x+1)5(9x-1)=4
3—,2.5,0,-1.6
—,-7,-9,-5.4
4—,-2.65,-8,-0.08
(1)-20与1
(2)-4.5与0(3)|-6.2|与|-0.7|
(4)-—与-—(5)-19与-|-8|(6)|-4.6|与|-8.9|
73
513
6-—-—7×
(-5)+26×
522
(---)×
-(-102)÷
8÷
433
346
609×
[4+(-4)3]
435
8m+(4m+3)9m+(9m-6s)-(6s-8m)
-9(9b-1)-5b8-(2b-6)+(5b+4)
7(ab+3a)+(5a-3b)16(abc+4a)-2(6a+6abc)
2(xy+6z)-(-xy+8z)-9(pq-pr)-(8pq+pr)
—x+—=—0.7x-0.1=5.8+6.4x
946
—+6x=9+—x4(x+8)+7(x+6)=4
75
—(6x-2)=—x+68x+9(17+x)=-6
y-3y+1
——=5-——0.5x-2(x-4)=45
25
—(1-3x)=—(4x+2)6(2x-7)=18
67
-4—,2.5,0,2.4
—,-23,-9,8.8
3
1—,1.7,-8,-0.8
(1)-15与-4
(2)-2.75与2.5(3)|-3.9|与|-1.4|
(4)-—与-—(5)17与-|-10|(6)|-30.2|与|-1.9|
63
713
1+—-—24×
(-12)+10×
(-12)
611
(---)÷
-(-126)÷
14×
(-3)
774
111
606×
[13+(-3)3]
345
3x-(8x-5)x-(8x-4p)+(2p-8x)
4(2s-9)-5s9+(3y+9)+(6y-5)
8(ab+4a)-(7a+8b)13(abc-8a)-8(6a+4abc)
3(xy-3z)-(-xy-8z)-9(pq+pr)+(2pq-pr)
5x1
—x-—=—0.3x+0.3=2.8-7.7x
683
—-5x=2-—x6(x-9)+5(x-7)=20
32
—(2x-9)=—x-73x-4(2-x)=-3
55
y-2y-1
——=8+——2x+7(x+9)=25
—(4-4x)=—(4x+1)9(9x-3)=17