问题 解答题
计算下面各题,能简便的要简便算
4
5
÷14
4
5
×
1
6
×
2
5

7
8
×
4
7
×8
13
27
×8+
19
27
×8.
答案

(1)

4
5
÷14=
2
35

(2)

4
5
×
1
6
×
2
5

=

2
15
×
2
5

=

4
75

(3)

7
8
×
4
7
×8,

=

7
8
×8×
4
7

=7×

4
7

=4;

(4)

13
27
×8+
19
27
×8,

=8×(

13
27
+
19
27
),

=8×

32
27

=9

13
27

单项选择题
问答题 简答题