1
4
=
1
5
-
1
6
=
100×
6
25
=
5
9
×27=
1
3
=
4
7
×
5
14
=
4
15
÷12=
5
28
×4=
3
8
÷
12
17
=
分析:本題根據(jù)分?jǐn)?shù)減法、乘法與除法的運(yùn)算法則計(jì)算即可.
解答:解:
1
4
=4,
1
5
-
1
6
=
1
30
,
100×
6
25
=24,
5
9
×27=15,
1
3
=15,
4
7
×
5
14
=
10
49
4
15
÷12=
1
45
,
5
28
×4=
5
7
,
3
8
÷
12
17
=
17
32
點(diǎn)評(píng):在完成分?jǐn)?shù)乘法與除法算式時(shí),要注意約分.
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