人教版七年级数学上册计算精品天天练54Word文档格式.docx
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1-—-—18×
(-14)+22×
(-14)
318
121
(---)÷
-(-180)×
10÷
(-15)
835
941
-(—+—+—)×
2007×
[15-(-5)3]
855
6、合并同类项。
-5x-(7x-6)8x-(9x-3z)-(2z+8x)
7(6n-2)-2n4+(3y+5)-(5y-5)
8(-ab-2a)+(4a+7b)18(abc-4a)+3(9a-7abc)
9(xy-7z)-(-xy+7z)-7(pq+pr)-(4pq-pr)
7、解方程。
7x1
—x-—=—0.8x-0.8=1+3.9x
929
81
—-5x=1+—x2(x+5)+4(x+8)=4
79
13
—(5x-8)=—x-93x+7(5+x)=-2
85
y+2y-1
——=8+——2.5x+3(x-9)=20
46
12
—(3-3x)=—(2x+4)6(7x+8)=4
65
4
2—,2.5,0,-8
—,-3,-4,3.5
2
-2—,-3.25,6,-0.48
(1)-14与-2
(2)-2.5与1.5(3)|-4.2|与|-0.1|
(4)-—与-—(5)1与-|-9|(6)|-68.5|与|-2.3|
75
8+—+—14×
(-2)-19×
(-2)
312
211
(-+-)÷
-(-168)÷
16×
(-3)
348
153
-(—+—-—)×
723×
[12+(-2)3]
364
-2a+(6a+7)5a-(5a-7p)+(7p-a)
-7(5m+7)-3m3-(4a+3)-(6a-8)
8(-ab-6a)-(7a+3b)8(abc+5a)+7(3a-4abc)
8(xy-2z)+(-xy+7z)-8(pq+pr)+(7pq+pr)
—x+—=—0.3x+0.4=6.6-5.5x
686
—+9x=3-—x9(x-7)-5(x-3)=10
35
—(5x-5)=—x-72x-9(3+x)=-7
y+1y+2
——=7-——2.5x-10(x-2)=35
35
—(4+3x)=—(3x+4)2(8x-9)=18
25
3—,5,0,4.8
-—,12,-6,-0.4
-6—,4.8,-9,-0.64
(1)-11与7
(2)-4与2.5(3)|-5.4|与|3.2|
(4)-—与-—(5)10与-|-9|(6)|-20.6|与|-0.7|
99
17
4-—+—12×
(-13)+7×
(-13)
118
(-+-)×
-(-162)×
(-27)
647
816
1478×
[6+(-1)3]
737
-8n+(4n+6)n+(7n-7s)+(2s+n)
-6(8m+8)-6m2-(2x-8)+(6x+4)
4(-ab-6a)+(5a+9b)8(abc+9a)+4(2a-4abc)
8(xy+6z)+(-xy-8z)-4(pq-pr)-(5pq-pr)
—x-—=—0.1x-0.2=6.1-8.2x
623
21
—-8x=9+—x4(x+4)-4(x-6)=9
11
—(2x-6)=—x+55x-9(11+x)=-1
y+3y-1
——=3-——5x+6(x+6)=35
36
—(4-3x)=—(3x-2)4(3x-3)=3
37
3—,0.5,0,-7.2
—,-21.5,-13,-3.7
8
-9—,2.9,-8,0.48
9
(1)-13与-5
(2)-3与0.25(3)|-4.5|与|2.7|
(4)-—与-—(5)2与-|-4|(6)|-93.2|与|-6.2|
23
111
6+—+—3×
(-20)+10×
(-20)
918
378
-(-156)×
12÷
(-24)
487
165
1202×
[15-(-1)2]
456
9m-(9m+8)m-(5m+2c)-(5c-m)
4(8m+10)+6m6-(6a+10)-(2a+7)
2(ab-9a)-(6a-3b)9(abc-8a)-6(3a-4abc)
5(xy+8z)+(-xy-6z)-2(pq-pr)+(8pq-pr)
5x1
—x+—=—0.5x-0.4=7.8-7.4x
323
41
—+4x=2+—x8(x-7)-5(x+5)=4
39
—(8x-3)=—x-59x+8(1+x)=-1
y-1y-1
——=9+——5x+7.5(x+4)=5
25
—(3-3x)=—(4x-4)9(5x-5)=10
5—,3.5,0,3.2
-—,-22,2,-6.7
1—,1.85,-7,0.4
(1)-13与8
(2)-3.75与0.5(3)|-4.7|与|3.2|
(4)-—与-—(5)12与-|-10|(6)|-1.5|与|-4.2|
39
4+—-—17×
(-18)-10×
(-18)
314
-(-138)×
8÷
(-6)
483
637
-(—-—-—)×
1209×
[11-(-5)2]
546
-4m+(6m+4)m-(9m-9s)+(9s-m)
7(6t+4)-8t4-(4x+10)+(7x-3)
4(-ab+9a)-(9a+9b)9(abc-7a)+2(5a+6abc)
5(xy+9z)-(-xy+8z)-3(pq+pr)-(7pq+pr)
—x+—=—0.7x+0.8=9.1-4.1x
386
—+9x=8+—x3(x+9)+2(x+4)=4
99
—(7x+5)=—x-97x+8(5-x)=-6
y+1y+1
——=3-——4x-9(x-2)=5
—(3-4x)=—(2x+3)3(2x-1)=18