The numbers 623 to 629 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 623 | = | DCXXIII | = | 500 + 100 + 10 + 10 + 1 + 1 + 1 |
| 624 | = | DCXXIV | = | 500 + 100 + 10 + 10 + 5 − 1 |
| 625 | = | DCXXV | = | 500 + 100 + 10 + 10 + 5 |
| 626 | = | DCXXVI | = | 500 + 100 + 10 + 10 + 5 + 1 |
| 627 | = | DCXXVII | = | 500 + 100 + 10 + 10 + 5 + 1 + 1 |
| 628 | = | DCXXVIII | = | 500 + 100 + 10 + 10 + 5 + 1 + 1 + 1 |
| 629 | = | DCXXIX | = | 500 + 100 + 10 + 10 + 10 − 1 |