问题 解答题
计算下面各题,怎样简便就怎样算.
9
20
×
1
3
÷
6
5
1
4
÷
2
3
÷
7
8
2
5
×
4
7
+
3
5
÷
7
4
1
3
+3÷
3
2
36÷(
3
5
÷
1
10
2
5
÷
8
15
×
1
10
答案

(1)

9
20
×
1
3
÷
6
5

=

3
20
×
5
6

=

1
8

(2)

1
4
÷
2
3
÷
7
8

=

1
4
×
3
2
×
8
7

=

3
7

(3)

2
5
×
4
7
+
3
5
÷
7
4

=

2
5
×
4
7
+
3
5
×
4
7

=(

2
5
+
3
5
)×
4
7

=1×

4
7

=

4
7

(4)

1
3
+3÷
3
2

=

1
3
+3×
2
3

=

1
3
+2,

=2

1
3

(5)36÷(

3
5
÷
1
10

=36÷(

3
5
×10),

=36÷6,

=6;

(6)

2
5
÷
8
15
×
1
10

=

2
5
×
15
8
×
1
10

=

3
40

问答题 简答题
单项选择题