七年级数学上册精品天天练13Word格式.docx
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713
6-—+—30×
(-11)-26×
(-11)
318
177
(---)×
-(-180)÷
8÷
(-6)
566
144
-(—-—-—)×
634×
[19-(-5)2]
733
6、合并同类项。
-8n+(4n+3)8n+(7n+4z)-(3z-n)
6(5m+8)-5m2+(6x-8)-(7x+4)
9(-ab-9a)-(6a+5b)2(abc-9a)+3(7a-5abc)
9(xy+9z)+(-xy-4z)-3(pq+pr)-(7pq+pr)
7、解方程。
7x1
—x+—=—0.2x+0.4=7.7-6.7x
386
21
—+4x=2+—x2(x+8)+3(x+6)=16
39
14
—(8x-3)=—x+83x-9(8-x)=-4
95
y-1y+3
——=4+——4x-4.5(x+6)=45
26
12
—(4+2x)=—(5x+3)6(8x-8)=4
69
1—,-3.5,0,0.8
-—,4.5,2,-6.6
2—,-3.8,-5,-0.32
(1)-20与1
(2)-4.75与1.5(3)|-5.7|与|1.4|
(4)-—与-—(5)13与-|-2|(6)|-73.8|与|-6.5|
29
11
1-—-—16×
(-2)-13×
(-2)
312
559
(---)÷
6÷
(-3)
448
166
-(—+—+—)×
1473×
[17+(-2)3]
377
7b-(8b-5)8b+(2b+5s)+(6s-8b)
6(9m+3)-8m1+(4m-4)+(7m+4)
5(ab-8a)+(3a-3b)9(abc-2a)-4(2a-2abc)
9(xy-6z)-(-xy+4z)-8(pq-pr)-(5pq+pr)
5x1
—x+—=—0.4x-0.6=8-8.6x
669
81
—+9x=9+—x8(x+2)-3(x-4)=14
98
—(7x+6)=—x-28x-3(10-x)=-6
65
y+1y-3
——=8-——3x-1(x+5)=50
—(2-2x)=—(4x-5)6(4x-3)=5
99
-1—,-1,0,6.4
-—,6,-2,3.1
2
-5—,3.95,7,0.4
7
(1)-18与3
(2)-4.25与0.25(3)|-6.2|与|0.1|
(4)-—与-—(5)18与-|-2|(6)|-63.6|与|-6|
65
51
1-—-—4×
(-2)-24×
915
819
-(-84)×
14×
738
195
-(—+—-—)×
1603×
[15+(-3)2]
584
-9y+(2y+9)y+(4y-4p)-(9p+y)
9(7t+7)-7t4+(7b-2)-(5b-2)
3(ab-2a)-(5a+3b)6(abc-4a)+6(4a-5abc)
6(xy-7z)-(-xy+3z)-9(pq+pr)+(5pq-pr)
—x+—=—0.7x-0.5=8.9+2.6x
343
—-9x=4+—x5(x-3)-4(x-3)=15
36
—(5x-2)=—x-22x+5(8+x)=-1
35
y-1y-3
——=4+——5x+3(x-2)=45
25
—(3+3x)=—(2x-5)5(2x-9)=15
33
2—,1.5,0,-6.4
-—,16,-19,-8.1
-5—,-0.25,-10,-0.64
(1)-19与-1
(2)-3.5与-2(3)|-5.1|与|-3.6|
(4)-—与-—(5)17与-|-1|(6)|-46.7|与|-3.6|
711
6+—-—21×
(-20)-25×
(-20)
912
175
-(-168)÷
8×
(-9)
466
911
1283×
[8+(-1)2]
844
-8a-(4a+6)a+(6a+7q)+(2q+a)
5(9b+6)-8b8+(4x-7)+(5x-6)
5(ab-3a)+(3a-3b)20(abc+8a)-2(6a-3abc)
4(xy+6z)-(-xy-8z)-9(pq-pr)+(7pq-pr)
—x-—=—0.4x-0.3=9.3+9.5x
986
—-5x=4+—x8(x+8)+6(x-3)=19
34
13
—(2x-8)=—x-98x-9(3+x)=-8
y+2y-3
——=7-——0.5x-6(x-7)=50
36
—(4-4x)=—(2x+3)9(8x-4)=8
45
1—,2.5,0,7.2
-—,-7,-9,8.6
-4—,-3.05,-7,0.8
(1)-20与1
(2)-4与1.5(3)|-4.6|与|2.3|
(4)-—与-—(5)1与-|-10|(6)|-32.5|与|-7.4|
85
511
7-—-—19×
(-13)-4×
(-13)
121
(-+-)÷
-(-66)÷
(-21)
638
311
1405×
[13-(-2)2]
475
-4b+(3b+7)b-(3b+9s)+(4s+b)
-3(7b+8)-9b1-(9m+10)+(2m+10)
2(ab+2a)-(2a+8b)16(abc+7a)+5(7a+8abc)
4(xy-8z)+(-xy+6z)-8(pq+pr)+(8pq-pr)
—x+—=—0.7x-0.5=5.9-0.6x
626
41
—+8x=9-—x9(x+1)-5(x-3)=9
96
11
—(8x+2)=—x-32x+2(17+x)=-7
y-1y+2
——=3+——3.5x+6.5(x-3)=40
—(1-4x)=—(3x-1)8(7x+9)=17