问题 填空题
______÷5=0.4=
()
10
=12:______=______%
答案

0.4=

2
5
=2÷5=40%

2
5
=
4
10
=
12
30
=12:30

故答案为:2,4,30,40.

问答题 简答题
单项选择题 A1型题