问题 解答题
计算下面各题.注意怎样简便就怎样算!
5
8
÷(1.625-
6
11
-
5
11

[
5
6
-(
1
6
+
1
3
)]×
9
4
答案

5
8
÷(1.625-
6
11
-
5
11

=

5
8
÷[1.625-(
6
11
+
5
11
)],

=

5
8
÷
5
8

=1;

[

5
6
-(
1
6
+
1
3
)]×
9
4

=[

5
6
-
1
6
-
1
3
9
4

=[

2
3
-
1
3
9
4

=

1
3
×
9
4

=

3
4

单项选择题
单项选择题