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(  3  )12
=12÷
48
48
=0.25=3:
12
12
=
25
25
%
分析:解决此题关键在于0.25,0.25可转化成25%,也可转化成
1
4
,进一步转化成
3
12
1
4
可转化成1÷4,进一步转化成12÷48,
1
4
还可转化成1:4,进一步转化成3:12.
解答:解:0.25=25%=
1
4
=
3
12
=1÷4=12÷48=1:4=3:12.
故答案为:3,48,12,25.
点评:此题考查小数、分数、百分数之间的关系及其转化,运用它们的关系和性质进行转化即可.
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