问题 解答题
把下列分数化成小数.
2
5
4
5
1
8
4
25
3
4
1
2
1
4
1
5
1
40
1
25
答案

2
5
=2÷5=0.4;

4
5
=4÷5=0.8;

1
8
=1÷8=0.125;

4
25
=4÷25=0.16;

3
4
=3÷4=0.75;

1
2
=1÷2=0.5;

1
4
=1÷4=0.25;

1
5
=1÷5=0.2;

1
40
=1÷40=0.025;

1
25
=1÷25=0.04;

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