题目内容

直接写得数．
1
3
×1=
1
4
×
2
5
=
5
6
×12=
7
12
×
3
14
=
30×
3
5
=
9×
7
18
=
2
3
×
9
10
=
4
25
×50=		 6×
1
6
=
4
11
×
11
4
=
分析：根据分数乘法的计算方法进行计算．据此解答．
解答：
解：
1
3
×1=
1
3
1
4
×
2
5
=
1
10
5
6
×12=10
7
12
×
3
14
=
1
8
 30×
3
5
=18
9×
7
18
=
7
2
2
3
×
9
10
=
3
5
4
25
×50=8		 6×
1
6
=1
4
11
×
11
4
=1
点评：本题主要考查了学生分数乘法的计算能力．
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1
2
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1
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=		 1÷
1
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=
2
3
×
3
2
=
4
9
÷
1
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=
3
5
×
1
6
=
2
7
×14=
1
3
+
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=		 2-
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÷
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÷
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直接写得数
1
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-
1
6
=		 1÷
3
7
=		 7×
5
28
=		 3÷
1
3
=
4
7
÷4=
4
5
+
1
10
=
5
8
×
1
5
×8=		 0÷
1
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=
直接写得数
1
5
+
1
3
=		 1÷
3
5
=
3
8
×12×
2
3
=
14
5
×
3
2
+
14
5
×
7
2
=
5
9
+
3
11
+
4
9
+
8
11
=
8-
1
8
=		 2.25-0.25=
9
10
×
1
6
÷
3
5
=
20
9
÷
11
8
-
2
9
×
8
11
=		 5-
1
6
-
5
6
=
直接写得数．
1
3
×1=
1
4
×
2
5
=
5
6
×12=
7
12
×
3
14
=
30×
3
5
=
9×
7
18
=
2
3
×
9
10
=
4
25
×50=		 6×
1
6
=
4
11
×
11
4
=

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