直接寫出得數(shù).
3
5
×
5
9
=
5
8
=
3
7
×1
=
5
12
×
5
4
=
3
8
÷3
=
12
41
=
1
5
÷7
=
9
11
÷7
=
分析:本題根據(jù)分?jǐn)?shù)乘法與除法的運(yùn)逄法則計算即可.
解答:解:
3
5
×
5
9
=
1
3
,
5
8
=
5
2
,
3
7
×1
=
3
7
5
12
×
5
4
=
25
48
,
3
8
÷3
=
1
8
,
12
41
=0,
1
5
÷7
=
1
35
,
9
11
÷7
=
9
77
點(diǎn)評:完成此類題目要細(xì)心,在保證做題質(zhì)量的同時,要注意提高做題的速度.
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