_÷5=﹙﹚35=6÷_=0.6=﹙﹚25=﹙﹚20.

问题描述:

______÷5=

﹙﹚
35
=6÷______=0.6=
﹙﹚
25
=
﹙﹚
20

3÷5=

21
35
=6÷10=0.6=
15
25
=
12
20

故答案为:3,21,10,15,12.