直接寫得數(shù)
12
25
÷
3
5
=
24×
1
15
=
11
15
÷
11
18
=
20÷
4
5
=
1
5
+
2
3
=
1
5
-
2
15
=
4
5
×
5
16
=
1
3
÷
5
6
=
1
5
-
1
6
=
10
33
÷
5
11
=
分析:本題根據(jù)分?jǐn)?shù)乘法、除法、加法與減法的運(yùn)算法則計(jì)算即可.
解答:解:

12
25
÷
3
5
=
4
5
24×
1
15
=
8
5
11
15
÷
11
18
=
6
5
20÷
4
5
=25
1
5
+
2
3
=
13
15
1
5
-
2
15
=
1
15
4
5
×
5
16
=
1
4
1
3
÷
5
6
=
2
5
1
5
-
1
6
=
1
30
10
33
÷
5
11
=
2
3
點(diǎn)評(píng):完成分?jǐn)?shù)乘除法算式時(shí),要注意約分.完成分?jǐn)?shù)加減法題目時(shí),要注意通分、約分.
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