题目内容

计算.
7
12
÷
3
5
×
3
8
=
4
5
÷
3
10
÷
3
5
=
2
3
×5÷
3
5
=
3
4
×
4
9
÷
2
7
=
5
14
÷
3
5
×
3
4
=
4
5
×
3
7
÷
3
25
=
分析:按照从左到右的顺序依次计算即可,注意先把除变为乘.
解答:
解:
7
12
÷
3
5
×
3
8

=
7
12
×
5
3
×
3
8

=
35
96


4
5
÷
3
10
÷
3
5

=
4
5
×
10
3
×
5
3

=
40
9
2
3
×5÷
3
5

=
2
3
×5×
5
3

=
50
9


3
4
×
4
9
÷
2
7

=
3
4
×
4
9
×
7
2

=
7
6


5
14
÷
3
5
×
3
4

=
5
14
×
5
3
×
3
4

=
25
56


4
5
×
3
7
÷
3
25

=
4
5
×
3
7
×
25
3

=
20
7
点评:计算乘除混合运算,一般先把除法改为乘法,再按照分数的乘法法则计算.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网