Talen 1650 till 1656 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1650 | = | MDCL | = | 1000 + 500 + 100 + 50 |
| 1651 | = | MDCLI | = | 1000 + 500 + 100 + 50 + 1 |
| 1652 | = | MDCLII | = | 1000 + 500 + 100 + 50 + 1 + 1 |
| 1653 | = | MDCLIII | = | 1000 + 500 + 100 + 50 + 1 + 1 + 1 |
| 1654 | = | MDCLIV | = | 1000 + 500 + 100 + 50 + 5 − 1 |
| 1655 | = | MDCLV | = | 1000 + 500 + 100 + 50 + 5 |
| 1656 | = | MDCLVI | = | 1000 + 500 + 100 + 50 + 5 + 1 |