精英家教网 > 小学数学 > 题目详情
3
4
=
(  )
48
=
9
9
÷12=
0.75
0.75
(填小数)
分析:解答此题的关键是
3
4
,根据分数的基本性质,
3
4
的分子、分母都乘12得到
36
48
;根据分数与除法的关系,
3
4
=3÷4,再根据商不变的性质,被除数、除数都乘3得9÷12;
3
4
=3÷4=0.75.由此进行转化并填空.
解答:解:
3
4
=
36
48
=9÷12=0.75;
故答案为:36,9,0.75.
点评:此题考查除式、小数、分数之间的转化,利用它们之间的关系和性质进行转化即可.
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