5
4
÷
2
9
÷
4
7
=
5
4
5
4
×
9
2
9
2
×
7
4
7
4
分析:根據(jù)分數(shù)除法的計算法則:除以一個不為零的數(shù)等于乘上這個數(shù)的倒數(shù)進行求解.
解答:解:
5
4
÷
2
9
÷
4
7

=
5
4
×
9
2
×
7
4

=
315
32

故答案為:
5
4
9
2
,
7
4
點評:本題考查了分數(shù)除法的計算方法:除數(shù)變倒數(shù),除號變乘號.
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