3
7
×2=
1
9
×8=
5
16
×4=
5
9
×6=
5
24
×36=
7
11
×4=
21×
4
7
=
3
7
=
24×
7
27
=
分析:分數(shù)乘整數(shù),用分數(shù)的分子和整數(shù)相乘的積做分子,分母不變,能約分的要約分,據(jù)此解答即可.
解答:解:
3
7
×2=
6
7
1
9
×8=
8
9
5
16
×4=
5
4
5
9
×6=
10
3
5
24
×36=
15
2
7
11
×4=
28
11
21×
4
7
=12
3
7
=
15
7
24×
7
27
=
56
9
點評:此題主要考查分數(shù)乘法的運算法則的靈活應用.
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