3,2 : 8 = 32/10 · 1/8 = 4/10 = 2/5
1,0(6)=1 intreg 6/90 = 96/90 = 16/15
2,(6)=2 intregi 6/9 = 24/9 = 8/3
16/15 : 8/3 = 16/15 · 3/8 = 2/5
0,36 = 36/100 = 9/25
0,17= 17/100
9/25 : 17/100 = 9/25 · 100/17 = 36/17
1,625 = 1 intreg 625/1000 = 1625/1000 = 13/8
1,8(8)=1 intreg (88-8)/90 = 1 intreg 80/90 = 170/90 = 17/9
13/8 : 17/9 = 13/8 · 9/17 = 117/136
Se pot forma rapoarte cu primele doua :
3,2/8 = 1,0(6)/2,(6) pentru ca ambele sunt egale cu 2/5
