问题 解答题
0.4:
1
4
化成最简比是______,比值是______.
答案

(1)0.4:

1
4

=

2
5
1
4

=(

2
5
×20):(
1
4
×20),

=8:5;

(2)0.4:

1
4

=

2
5
1
4

=

2
5
÷
1
4

=

8
5

故答案为:8:5,

8
5

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