0.25          
0.34           
0.5
1.15          
0.24          
3.125.
分析:小數(shù)化分?jǐn)?shù),原來有幾位小數(shù)就在1的后面加幾個0作分母,把原來的小數(shù)去掉小數(shù)點作分子,化成分?jǐn)?shù)后能約分的要約分.
解答:解:0.25=
25
100
=
1
4
;
0.34=
34
100
=
17
50
;
0.5=
5
10
=
1
2
;
1.15=
115
100
=
23
20
;
0.24=
24
100
=
6
25

3.125=
3125
1000
25
8
;
故答案為:
1
4
,
17
50
,
1
2
23
20
,
6
25
,
25
8
點評:本題是考查小數(shù)化分?jǐn)?shù).注意,化成的分?jǐn)?shù)應(yīng)是最簡分?jǐn)?shù).
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