分数与小数的转化50题(有答案)
庆国庆诗歌-周穷
分数与小数互化50题
一、小数转化成分数:
0.3= 0.25= 0.45= 0.89=
1.06=
2.5= 0.375= 4.5=
0.27= 1.52=
0.5= 0.08=
3.28= 10.06= 3.2=
0.005=
0.45= 2.6= 0.785=
3.45=
8.7= 0.43= 0.17= 1.6=
二、分数转化成分数:
(不能化成有限小数的保留两位小数)
1131
= = =
=
2445
2341
= =
= =
5558
5
37
1
= =
= =
88
8
10
1
379
= = =
=
20
101010
10
5
313
21
= 5=
201= 4=
420
8
50
1215
≈ ≈
≈ ≈
3366
1211
≈
≈ ≈ ≈
77911
答案:
一、0.3=
3
10
0.25=14 0.45= 920
0.89=89100
1.06= 5350 2.5=52 0.375=38
4.5=92
0.27=27100 1.52= 3825 0.5= 12
0.08=225
3.28=8225 10.06=
0.45= 920 2.6=135 0.785= 157200
3.45=6920
8.7= 8710 0.43= 43100
0.17= 17100 1.6=85
3
10
50
3.2=165 0.005=1200
二、
1
=
0.5
1
= 0.25
3
= 0.75
1
=0.2
2445
10
2341
= 0.4 = 0.6
= 0.8 =0.125
5558
5
37
1
=
0.375 = 0.625 = 0.875
=0.1
88
8
10
1
379
= 0.3
= 0.7 =0.9 =0.05
20
101010
5
313
21
= 10.75
5= 5.625 201= 201.65 4=4.42
420
8
50
1215
≈ 0.33 ≈ 0.67
≈ 0.17 ≈0.83
3366
1
121
≈
0.14 ≈ 0.29 ≈ 0.11
≈0.09
11
779