Talen 1725 till 1731 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1725 | = | MDCCXXV | = | 1000 + 500 + 100 + 100 + 10 + 10 + 5 |
| 1726 | = | MDCCXXVI | = | 1000 + 500 + 100 + 100 + 10 + 10 + 5 + 1 |
| 1727 | = | MDCCXXVII | = | 1000 + 500 + 100 + 100 + 10 + 10 + 5 + 1 + 1 |
| 1728 | = | MDCCXXVIII | = | 1000 + 500 + 100 + 100 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1729 | = | MDCCXXIX | = | 1000 + 500 + 100 + 100 + 10 + 10 + 10 − 1 |
| 1730 | = | MDCCXXX | = | 1000 + 500 + 100 + 100 + 10 + 10 + 10 |
| 1731 | = | MDCCXXXI | = | 1000 + 500 + 100 + 100 + 10 + 10 + 10 + 1 |