直接寫出得數(shù).
2
9
÷4=
3
10
=
4
5
×
3
8
=
1
3
÷6=
7
12
+
5
6
=
9
14
×
14
15
×
5
9
=
8
9
×
7
18
=
7
9
×
1
7
=
17-
4
8
=
4
9
×9÷
4
9
×9=
分析:本題根據(jù)分?jǐn)?shù)的加法,減法,乘法,除法的運(yùn)算法則計(jì)算即可.
解答:
解:
2
9
÷4=
1
18
3
10
=
3
2
4
5
×
3
8
=
3
10
1
3
÷6=
1
18
7
12
+
5
6
=
17
12
9
14
×
14
15
×
5
9
=
1
3
8
9
×
7
18
=0
7
9
×
1
7
=
1
9
17-
4
8
=16
1
2
4
9
×9÷
4
9
×9=81
點(diǎn)評:完成本題要細(xì)心分析式中數(shù)據(jù),能簡便計(jì)算的要簡便計(jì)算.
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