问题 填空题
4÷5=
()
15
=
28
()
=12:______=______[小数].
答案

4÷5=

4
5
=
12
15
=
28
35

4÷5=4:5=12:15,

4÷5=0.8,

即4÷5=

12
15
=
28
35
=12:25=0.8;

故答案为:12,35,15,0.8.

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