问题 填空题
4:______=80%=______÷15=
28
()
=1÷______=______(写小数)
答案

(1)80%=

80
100
=
4
5
=4:5;

(2)4:5=(4×3):(5×3)=12:15;

(3)

4
5
=
4×7
5×7
=
28
35

(4)4:5=(4÷4):(5÷4)=1÷

5
4

(5)80%=0.8.

故答案为:4,12,35,

5
4
,0.8.

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