1
2
×
1
3
=		 12×
5
6
=
5
8
×
4
15
=
8
9
×
27
40
=
11
18
×24=
3
4
×
8
9
=
11
38
×
19
22
=
3
12
×
24
39
=
分析：根據(jù)分乘法的計(jì)算法則進(jìn)行計(jì)算即可．
解答：
解：
1
2
×
1
3
=
1
6
 12×
5
6
=10
5
8
×
4
15
=
1
6
8
9
×
27
40
=
3
5
11
18
×24=
44
3
3
4
×
8
9
=
2
3
11
38
×
19
22
=
1
4
3
12
×
24
39
=
2
13
點(diǎn)評：本題考查了根據(jù)分乘法的計(jì)算法則進(jìn)行計(jì)算，較簡單，是基礎(chǔ)題．
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