问题 解答题
把下列分数化成小数.
1
10
2
3
5
1
5
8
9
100
7
20
1
2
1
4
31
100
23
20
2
25
答案

1
10
=1÷10=0.1,

3
5
=0.6,所以2
3
5
=2.6;

5
8
=0.625,所以1
5
8
=1.625;

9
100
=9÷100=0.09;

7
20
=7÷20=0.35;

1
2
=1÷2=0.5;

1
4
=1÷4=0.25;

31
100
=31÷100=0.31;

23
20
=23÷20=1.15;

2
25
=2÷25=0.08.

选择题
综合