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直接写得数
1
3
×0=
1
4
×
2
5
=
5
6
×12=
7
12
×
3
14
=
1
7
×14=
8
9
×
3
8
=
3
10
×
10
3
=
7
18
=
2
3
×
9
10
=
1
2
÷
2
3
=
1
5
+
4
5
=
3
4
-
1
4
=
2
5
×2=
3
7
×
1
3
=
12÷
3
4
=
5
9
×
3
5
=
分析:运用分数的加减、乘除法的计算法则进行计算即可.
解答:
解:
1
3
×0=0,

1
4
×
2
5
=
1
10

5
6
×12=10,

7
12
×
3
14
=
1
8
1
7
×14=2,
8
9
×
3
8
=
1
3
3
10
×
10
3
=1,
7
18
=3.5,
2
3
×
9
10
=
3
5
1
2
÷
2
3
=
3
4
1
5
+
4
5
=1,
3
4
-
1
4
=
1
2
2
5
×2=
4
5
3
7
×
1
3
=
1
7
12÷
3
4
=16,
5
9
×
3
5
=
1
3
点评:在计算分数的乘除法的时候,注意先约分再进行计算.
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