问题 解答题
求比值
3
7
19
21
                               
0.11:22                               0:0.875.
答案

(1)

3
7
19
21

=

3
7
÷
19
21

=

9
19

(2)0.11:22,

=0.11÷22,

=

1
200

(3)0:0.875,

=0÷0.875,

=0.

单项选择题 A3/A4型题
问答题 简答题