问题 解答题
计算下面各题.(写计算过程)
11
15
÷
7
10
=
2
15
÷6=
1
14
×140=
3
10
×
4
9
=
答案

11
15
÷
7
10

=

11
15
×
10
7

=

22
21

2
15
÷6
=
2
15
×
1
6

=

1
45
1
14
×140=10;

3
10
×
4
9
=
2
15

综合
单项选择题