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4÷5=
4
(  )
=
(  )
20
=
0.8
0.8
填小数,
15
24
化成最简分数是
5
8
5
8
分析:(1)用4÷5的被除数作分子,除数作分母可化成分数
4
5
;根据分数的基本性质,把
4
5
的分子和分母同时乘4可化成
16
20
;4÷5得小数商为0.8.
(2)根据分数的基本性质,把
15
24
的分子和分母同时除以3可化成最简分数是
5
8
解答:解:(1)4÷5=
4
5
=
16
20
=0.8.
(2)
15
24
=
5
8

故答案为:5,16,0.8,
5
8
点评:此题考查除法与分数的关系和分数的基本性质的灵活运用.
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