六年级数学下册解比例专项练习题61文档格式.docx
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111
—:
x40:
x=20:
5
567
—90:
x=9:
0.2
48
108
—=—90:
x=22.5:
7
1.2x
6
5:
70=x:
0.7—:
x=90:
12
7
1671
2xx6
710.43
8—=—
853x
x9:
x=4.5:
3
295
6=—:
46
105
—=—0.5:
x=0.125:
5.6x
0.8:
8=x:
0.2—:
1.8
3
1776
7xx5
111.49
4—=—
882.8x
x0.2:
x=0.1:
8
385
7=—:
—80:
x=100:
1
37
162
—=—0.9:
x=0.225:
9
7:
2=x:
0.5—:
x=30:
1.2
8
2761
3xx6
4525
3—=—
342x
x0.9:
x=0.45:
9
498
8=—:
—20:
x=8:
0.9
39
205
—=—8:
x=2:
6
4.8x
80:
50=x:
20—:
3283
7xx4
110.49
6—=—
x3:
x=1.5:
2
379
—2:
x=0.4:
129
—=—50:
x=12.5:
6:
5—:
x=3:
1.5
4481
7xx8
431.23
542.8x
576
2=—:
—6:
x=50:
0.8
56
107
—=—6:
3.2x
3:
30=x:
0.3—:
x=6:
150
2951
3xx4
170.64
5—=—
360.8x
x70:
x=35:
479
3=—:
90
27
123
—=—40:
x=10:
4x
40—:
4541
7xx2
911.84
840.4x
x7:
x=3.5:
485
5=—:
—50:
x=7:
20
82
—=—2:
x=0.5:
1:
90=x:
80—:
5
3541
6927
780.4x
584
x=5:
80
49
89
—=—5:
x=1.25:
60:
0.7=x:
x=0.6:
2786
5xx5
551.42
660.6x
x60:
467
—0.8:
x=0.8:
0.4
26
147
2.4x
0.9:
0.6=x:
x=60:
120
1641
5xx3
531.69
622.8x
267
—70:
30
59
62
80=x:
2—:
180
1581
1128
581.4x
x30:
x=15:
285
9=—:
165
4.4x
50:
0.8=x:
0.8—:
15
4
1661
2xx5
120.89
233x
x0.6:
286
—0.9:
122
—=—80:
20:
0.1=x:
1585
2xx4
110.67
2—=—
330.8x
x0.7:
x=0.35:
372
60
84
0.4:
50—:
1264
511.47
422.2x
583
10=—:
100
36
—=—0.2:
x=0.05:
90:
0.3=x:
4—:
1421
3xx5
550.42
663x
x4:
492
—60:
x=70:
9=x:
8—:
1251