人教版七年级数学上册计算精品天天练15Word格式文档下载.docx
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2+—+—26×
(-10)+1×
(-10)
318
859
(---)÷
-(-156)×
16÷
(-18)
768
142
-(—-—-—)×
1051×
[16+(-5)3]
753
6、合并同类项。
-5n-(2n+2)n+(8n-8c)-(8c+8n)
2(5t+7)-8t4+(8x+6)+(2x-9)
3(-ab-6a)-(9a+9b)19(abc+3a)-3(4a-7abc)
6(xy+4z)-(-xy+6z)-8(pq+pr)+(4pq+pr)
7、解方程。
5x1
—x+—=—0.2x-0.9=9.4-8.5x
643
81
—+9x=8+—x2(x-2)-3(x-7)=8
75
11
—(8x+5)=—x-37x-9(17+x)=-3
45
y-2y-3
——=5-——0.5x+5(x+9)=20
46
12
—(1-2x)=—(2x+2)7(6x+7)=4
73
4
1—,-4.5,0,2.4
—,7,-6,5.7
6—,1.75,-10,0.32
(1)-9与1
(2)-2.25与2(3)|-6.5|与|-0.2|
(4)-—与-—(5)-19与-|-9|(6)|-17.3|与|-6.8|
83
51
4+—+—17×
(-5)-30×
(-5)
612
157
(-+-)×
-(-78)×
2÷
(-9)
566
756
2527×
[2+(-4)3]
667
-7b+(6b+7)8b-(8b-5s)-(2s+b)
3(5b-1)-8b4-(4x+10)-(3x-1)
4(ab+8a)+(6a-2b)7(abc+8a)-9(7a+5abc)
6(xy+7z)-(-xy+4z)-8(pq+pr)+(2pq-pr)
7x1
—x+—=—0.4x-0.6=9.6-3.7x
669
21
—+5x=2-—x3(x-6)+7(x-2)=4
38
14
—(5x+2)=—x+72x+5(19-x)=-8
——=9-——4.5x-2.5(x+7)=45
25
—(2+3x)=—(4x+4)8(7x-2)=3
85
1—,-2,0,-5.6
—,16.5,-20,-8.9
7
-3—,-3.45,6,-0.8
(1)-16与8
(2)-3.5与1.75(3)|-3.9|与|-2.9|
(4)-—与-—(5)-17与-|-3|(6)|-41.2|与|-7.8|
53
713
6-—+—26×
(-3)-16×
(-3)
315
183
-(-102)×
16×
(-6)
874
611
-(—-—+—)×
2107×
[14+(-4)2]
765
-3a-(6a-6)2a-(6a-5z)-(9z+a)
7(3b-7)+6b2+(9b-1)+(4b-2)
2(ab+9a)-(2a-4b)4(abc-9a)+2(5a+3abc)
7(xy-4z)-(-xy-5z)-4(pq+pr)+(8pq-pr)
—x+—=—0.5x-0.8=7-4x
943
—+8x=7-—x9(x-1)-9(x-4)=1
74
—(5x+3)=—x-66x-5(18-x)=-2
65
y-1y+2
——=9+——4.5x+7(x-4)=25
—(2-3x)=—(4x+1)7(8x-6)=12
2
-5—,-1,0,-0.8
—,-12.5,-4,-6.2
5—,-2.55,-5,0.4
(1)-14与-3
(2)-4.75与0(3)|-9|与|2.9|
(4)-—与-—(5)3与-|-8|(6)|-61.1|与|-8.3|
35
57
4-—-—7×
(-12)+7×
(-12)
195
-(-60)×
4÷
784
428
-(—+—+—)×
1055×
[12-(-3)2]
537
-9y+(2y+2)y-(9y+4d)-(8d-y)
-3(6n+5)-5n5-(4y+7)+(5y-1)
7(-ab-3a)+(2a-7b)4(abc+2a)+3(8a-8abc)
3(xy-2z)+(-xy+3z)-5(pq+pr)+(5pq-pr)
—x-—=—0.8x+0.9=0.2-6.8x
363
—-8x=4-—x5(x+1)-6(x-7)=4
97
—(2x-3)=—x-29x+8(19+x)=-9
35
y-2y+1
——=4+——2.5x-3.5(x-6)=40
—(4+2x)=—(5x-4)7(4x-7)=18
47
4—,3.5,0,3.2
—,3.5,14,-8.1
1—,1.85,-9,0.32
(1)-20与-5
(2)-2.5与1.25(3)|-7.5|与|-0.6|
(4)-—与-—(5)-17与-|-7|(6)|-71.6|与|-9|
73
77
9+—-—30×
(-19)-6×
(-19)
196
-(-132)×
14÷
(-27)
385
615
1202×
[2-(-1)2]
564
4a+(9a+9)5a+(9a+7z)+(3z-4a)
-2(8m-8)+3m1-(7a-5)-(3