Napríklad, aby sme získali desatinný zlomok, 3/4 sa rozšíri na 75/100 vynásobením čitateľa o 25 a menovateľa o 25:
| 3 | = | 3 × 25 | = | 75 | × 100% = | 75% |
| 4 | 4 × 25 | 100 |
Inou metódou je urobiť dlhé delenie 3 delené 4.
| Zlomok | Percento |
|---|---|
| 1/2 | 50% |
| 1/3 | 33,33% |
| 2/3 | 66,67% |
| 1/4 | 25% |
| 2/4 | 50% |
| 3/4 | 75% |
| 1/5 | 20% |
| 2/5 | 40% |
| 3/5 | 60% |
| 4/5 | 80% |
| 1/6 | 16,67% |
| 2/6 | 33,33% |
| 3/6 | 50% |
| 4/6 | 66,67% |
| 5/6 | 83,33% |
| 1/7 | 14,28714% |
| 2/7 | 28,57 1429% |
| 3/7 | 42,857143% |
| 4/7 | 57,142858% |
| 5/7 | 71,428571% |
| 6/7 | 85,714286% |
| 1/8 | 12,5% |
| 2/8 | 25% |
| 3/8 | 37,5% |
| 4/8 | 50% |
| 5/8 | 62,5% |
| 6/8 | 75% |
| 7/8 | 87,5% |
| 1/9 | 11,1111111% |
| 2/9 | 22,2222222% |
| 3/9 | 33,3333333% |
| 4/9 | 44,444444% |
| 5/9 | 55,555556% |
| 6/9 | 66,666667% |
| 7/9 | 77,7777778% |
| 8/9 | 88,888889% |
| 1/10 | 10% |
| 2/10 | 20% |
| 3/10 | 30% |
| 4/10 | 40% |
| 5/10 | 50% |
| 6/10 | 60% |
| 10. 10. | 70% |
| 8/10 | 80% |
| 9/10 | 90% |
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