Talen 1611 till 1617 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1611 | = | MDCXI | = | 1000 + 500 + 100 + 10 + 1 |
| 1612 | = | MDCXII | = | 1000 + 500 + 100 + 10 + 1 + 1 |
| 1613 | = | MDCXIII | = | 1000 + 500 + 100 + 10 + 1 + 1 + 1 |
| 1614 | = | MDCXIV | = | 1000 + 500 + 100 + 10 + 5 − 1 |
| 1615 | = | MDCXV | = | 1000 + 500 + 100 + 10 + 5 |
| 1616 | = | MDCXVI | = | 1000 + 500 + 100 + 10 + 5 + 1 |
| 1617 | = | MDCXVII | = | 1000 + 500 + 100 + 10 + 5 + 1 + 1 |