题目内容

3
8
=
3
4
÷
4
5
=
5
6
÷10=
3
7
+
3
7
=
3
4
×
5
7
=
0.4÷
1
10
=
2-1 
3
8
=
9
11
÷
3
4
=
3
4
-
3
4
=
20÷
1
4
=
5
13
×39=
3
5
=
5
7
=
5
7
×
5
7
=
4
9
÷
4
9
=
3
7
×
5
6
=
7
45
÷35=
7
11
×
22
63
=
1
6
+
1
3
=
3
5
÷1=
2
3
=
9
35
÷
9
11
=
5
6
=
8-
1
4
=
9
25
×100=
考点:分数除法,分数乘法
专题:运算顺序及法则
分析:根据分数乘法、分数除法、分数加法和分数减法的计算方法,依次进行解答即可.
解答: 解:
3
8
=16
3
4
÷
4
5
=
15
16
5
6
÷10=
1
12
3
7
+
3
7
=
6
7
3
4
×
5
7
=
15
28
0.4÷
1
10
=4
2-1 
3
8
=
5
8
9
11
÷
3
4
=
12
11
3
4
-
3
4
=0
20÷
1
4
=80
5
13
×39=15
3
5
=0
5
7
=
5
7
5
7
×
5
7
=
25
49
4
9
÷
4
9
=1
3
7
×
5
6
=
5
14
7
45
÷35=
1
225
7
11
×
22
63
=
2
9
1
6
+
1
3
=
1
2
3
5
÷1=
3
5
2
3
=3
9
35
÷
9
11
=
11
35
5
6
=
6
5
8-
1
4
=7
3
4
9
25
×100=36
点评:明确分数乘法、分数除法、分数加法和分数减法的计算方法,是解答此题的关键.
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