1) - 3.25151515...
= - 3 - (2515 - 25)/9900
= - 3 - 2490/9900
= - 3 - 249/990
= [- 3(990) - 249]/990
= - (2970 + 249)/990
= - 3219/990
- 3.25151515... = - 1073/330
2) - 0.25
= - 25/100
- 0,25 = - 1/4
3) 1.8888...
= 1 + 8/9
= (9 + 8)/9
1.8888 = 17/9
4) 2.3 = 23/10
5) 0.008
= 8/1000
0.008 = 2/250
6) 0.00033..
= (00033 - 000)/99900
= 10^-3x33/99
= 10^-3x11/33
= 11/33000
0.00033 = 11/33300
