The numbers 648 to 654 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 648 | = | DCXLVIII | = | 500 + 100 + 50 − 10 + 5 + 1 + 1 + 1 |
| 649 | = | DCXLIX | = | 500 + 100 + 50 − 10 + 10 − 1 |
| 650 | = | DCL | = | 500 + 100 + 50 |
| 651 | = | DCLI | = | 500 + 100 + 50 + 1 |
| 652 | = | DCLII | = | 500 + 100 + 50 + 1 + 1 |
| 653 | = | DCLIII | = | 500 + 100 + 50 + 1 + 1 + 1 |
| 654 | = | DCLIV | = | 500 + 100 + 50 + 5 − 1 |