观察循环小数化成分数的特征，用分数表示循环小数．（1）．0.3=39=130...16=16996.．01．5=615199=65

Question

观察循环小数化成分数的特征，用分数表示循环小数．
（1）

．

0.3

= (3)/(9) =(1)/(3) 0.

..

16

= (16)/(99) 6.

．

0

1

．

5

= 6(15)/(199) = 6(5)/(333) 0.

．

1

0

．

2

= (102)/(999) = (34)/(333) 0.

．

2

0

．

4

= (())/(())
（2）0.2

．

6

= (26-2)/(90) = (24)/(90) = (8)/(30) = (4)/(15) 0.35

．

3

= (353-35)/(900) = (318)/(900) = (53)/(150) 6.2

..

81

= 6(281-2)/(990) = 2(279)/(990) = 6(31)/(110) 0.12

．

3

4

．

5

= (())/(()) ．

Answer 1

（1）0.

••

204

= (204)/(999) = (68)/(333) ，
（2）0.12

••

345

= (12345-12)/(99900) = (12333)/(99900) = (4111)/(33300) ，
故答案为： (68)/(333) ； (4111)/(33300) ．