The numbers 631 to 637 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 631 | = | DCXXXI | = | 500 + 100 + 10 + 10 + 10 + 1 |
| 632 | = | DCXXXII | = | 500 + 100 + 10 + 10 + 10 + 1 + 1 |
| 633 | = | DCXXXIII | = | 500 + 100 + 10 + 10 + 10 + 1 + 1 + 1 |
| 634 | = | DCXXXIV | = | 500 + 100 + 10 + 10 + 10 + 5 − 1 |
| 635 | = | DCXXXV | = | 500 + 100 + 10 + 10 + 10 + 5 |
| 636 | = | DCXXXVI | = | 500 + 100 + 10 + 10 + 10 + 5 + 1 |
| 637 | = | DCXXXVII | = | 500 + 100 + 10 + 10 + 10 + 5 + 1 + 1 |