七年级数学上册天天练91Word下载.docx
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1-—-—29×
(-9)-28×
(-9)
612
113
(---)×
-(-126)×
6÷
(-21)
484
119
-(—-—+—)×
1608×
[12-(-3)3]
548
6、合并同类项。
-2x-(6x-3)x-(6x-7c)+(9c+2x)
-8(4s-1)-6s2-(8m-9)+(8m+7)
3(ab-7a)+(7a+9b)18(abc-3a)-5(2a+3abc)
3(xy+2z)-(-xy+3z)-9(pq-pr)-(6pq-pr)
7、解方程。
7x1
—x+—=—0.8x+0.9=9.6+5x
966
21
—+4x=3-—x2(x-8)-9(x-9)=8
35
13
—(4x-8)=—x-12x+3(7-x)=-8
y-2y+2
——=9+——3.5x+8.5(x+9)=10
26
12
—(5+3x)=—(2x-5)8(5x-4)=4
39
2
-1—,1.5,0,1.6
-—,-7.5,-14,-0.6
6
-8—,-1.25,-8,0.08
(1)-14与-1
(2)-3.25与-0.25(3)|-5.9|与|0.7|
(4)-—与-—(5)-18与-|-8|(6)|-84.3|与|-9.7|
45
511
8+—-—1×
(-13)-7×
(-13)
918
158
(-+-)×
-(-90)÷
12÷
(-6)
847
871
-(—+—-—)×
3365×
[1+(-2)3]
786
-4x-(9x+2)x+(4x-4q)+(8q+x)
-5(6s-8)+7s1+(4x-8)-(2x-3)
2(-ab+6a)-(4a+4b)2(abc+6a)-9(4a-2abc)
8(xy-2z)-(-xy+5z)-9(pq-pr)-(6pq-pr)
5x1
—x-—=—0.1x-0.6=2.8+4.4x
346
41
—+6x=7-—x6(x+8)+8(x+5)=5
97
—(2x+2)=—x+16x-8(14-x)=-4
25
y-2y-1
——=6+——1x+5.5(x+1)=30
—(1-2x)=—(3x+4)9(3x+4)=13
49
4
1—,-1.5,0,-4
-—,-5.5,-18,-9.5
3
1—,-2.5,5,0.8
(1)-9与-4
(2)-3与0.5(3)|-6.2|与|3.1|
(4)-—与-—(5)1与-|-8|(6)|-24.2|与|-1.5|
97
57
6+—+—8×
(-17)-16×
(-17)
312
538
(-+-)÷
10÷
(-15)
647
477
2401×
[8+(-3)2]
586
5a+(7a-2)8a-(4a-4z)+(8z+a)
7(3s+1)+6s9+(7m+10)-(6m-1)
9(ab-8a)+(2a-4b)4(abc+6a)+5(9a+9abc)
6(xy+8z)+(-xy-5z)-4(pq+pr)-(7pq-pr)
—x+—=—0.2x+0.9=5.4-9.5x
963
—-3x=8+—x2(x+6)-4(x-9)=5
32
11
—(7x-3)=—x+19x-5(2+x)=-1
55
y+3y+2
——=1+——2.5x+2.5(x+4)=45
—(5-3x)=—(2x-4)3(3x-6)=12
99
-4—,-1,0,-3.2
—,-2,8,7
-8—,-3.35,6,-0.64
9
(1)-13与9
(2)-3.25与-0.25(3)|-5.6|与|-1.2|
(4)-—与-—(5)-11与-|-9|(6)|-96.4|与|-7.6|
33
8+—+—19×
(-16)+13×
(-16)
915
-(-96)÷
16×
(-18)
634
713
-(—+—+—)×
[8+(-5)3]
854
5a+(4a+7)9a+(6a+6d)-(4d-a)
6(9m-6)+5m7+(7x+6)-(5x-3)
4(-ab+7a)-(7a-3b)18(abc-5a)-9(3a+7abc)
9(xy-9z)+(-xy+5z)-4(pq+pr)+(7pq+pr)
—x+—=—0.1x-0.6=1.8+0.5x
369
—+7x=4-—x8(x-6)-5(x+2)=8
79
—(8x+6)=—x-55x+8(15-x)=-7
65
y+1y+1
——=9+——3x+5(x+2)=5
36
—(2-4x)=—(4x+2)5(7x+9)=3
95
-4—,1.5,0,-7.2
—,-24.5,-18,1.3
-9—,-0.2,-6,0.64
(1)-16与6
(2)-4.25与2.25(3)|-6.7|与|-2.5|
(4)-—与-—(5)16与-|-6|(6)|-99.5|与|-4.2|
99
9+—+—10×
(-2)-1×
(-2)
618
911
-(-120)×
18×
(-3)
874
616
2451×
[13-(-5)3]
577
5n-(5n+4)n+(4n+7z)+(2z+7n)
5(6b+6)-8b2+(8m+7)+(3m-10)
8(-ab-7a)+(9a-2b)16(abc-7a)-8(3a+3abc)
3(xy+8z)+(-xy-2z)-5(pq+pr)-(8pq+pr)
—x-—=—0.5x-0.7=6+8.4x
669
—-7x=9-—x9(x+1)-6(x+2)=1
57
14
—(2x-2)=—x-88x+4(19+x)=-1
75
y+2y+1
——=3+——3x+1(x+1)=45
35
—(3+3x)=—(3x-2)5(5x+4)=9
83