下面的分数化成小数,(除不尽的保留两位小数).725 258 ...

下面的分数化成小数,(除不尽的保留两位小数).725 258 3320 711 1340 79.

第1个回答  2014-12-31
7
25
=7÷25=0.28;
2
5
8
=
21
8
=21÷8=2.625;
3
3
20
=
63
20
=63÷20=3.15;
7
11
=7÷11≈0.64;
13
40
=13÷40=0.325;
7
9
=7÷9≈0.78.
故答案为:0.28,2.625,3.15,0.64,0.325,0.78.