17/10=1,7
1034/100=10,34
17/1000=0,017
54/10000=0,0054
2. Sa se tranforme fractiile zecimale in fractii ordinare
13,2=132/10=61/5
2,49=249/100
11,003=11003/1000
3,0004=30004/10000
5,7=57/10
3. Transformati fractiile periodice:
1,(3)=(13-1)/9=12/9=4/3
2,(12)=(212-2)/99=210/99=70/33
0,(23)=23/99
2,1(3)=(213-21)/90=192/90=96/45=32/15
3,2(4)=(324-32)/90=292/90=146/45
4,9(03)=(4903-49)/990=4854/990=809/165