Talen 1555 till 1561 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1555 | = | MDLV | = | 1000 + 500 + 50 + 5 |
| 1556 | = | MDLVI | = | 1000 + 500 + 50 + 5 + 1 |
| 1557 | = | MDLVII | = | 1000 + 500 + 50 + 5 + 1 + 1 |
| 1558 | = | MDLVIII | = | 1000 + 500 + 50 + 5 + 1 + 1 + 1 |
| 1559 | = | MDLIX | = | 1000 + 500 + 50 + 10 − 1 |
| 1560 | = | MDLX | = | 1000 + 500 + 50 + 10 |
| 1561 | = | MDLXI | = | 1000 + 500 + 50 + 10 + 1 |