精英家教网 > 小学数学 > 题目详情
2
(   )
=0.4=
2
2
÷
5
5
=
(   )
25
分析:抓住0.4,写成分数是
2
5
,写成除法算式是2÷5,根据分数的基本性质,分子分母同时乘以5,可得:
10
25
,由此即可填空.
解答:解:根据题干分析可得:
2
5
=0.4=2÷5=
10
25

故答案为:5;2;5;10.
点评:此题考查了比,分数,小数与除法之间的关系的灵活应用.
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