The numbers 1642 to 1648 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 1642 | = | MDCXLII | = | 1000 + 500 + 100 + 50 − 10 + 1 + 1 |
| 1643 | = | MDCXLIII | = | 1000 + 500 + 100 + 50 − 10 + 1 + 1 + 1 |
| 1644 | = | MDCXLIV | = | 1000 + 500 + 100 + 50 − 10 + 5 − 1 |
| 1645 | = | MDCXLV | = | 1000 + 500 + 100 + 50 − 10 + 5 |
| 1646 | = | MDCXLVI | = | 1000 + 500 + 100 + 50 − 10 + 5 + 1 |
| 1647 | = | MDCXLVII | = | 1000 + 500 + 100 + 50 − 10 + 5 + 1 + 1 |
| 1648 | = | MDCXLVIII | = | 1000 + 500 + 100 + 50 − 10 + 5 + 1 + 1 + 1 |