问题 解答题
计算下面各题.(能简算的要简算).
(1)
3
4
×40%+
3
4
×60%
(2)
5
8
×
1
9
×80%
答案

(1)

3
4
×40%+
3
4
×60%,

=

3
4
×(40%+60%),

=

3
4
×1,

=

3
4

(2)

5
8
×
1
9
×80%,

=

5
8
×
8
10
×
1
9

=

1
2
×
1
9

=

1
18

问答题 简答题
问答题 简答题