The numbers 505 to 511 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 505 | = | DV | = | 500 + 5 |
| 506 | = | DVI | = | 500 + 5 + 1 |
| 507 | = | DVII | = | 500 + 5 + 1 + 1 |
| 508 | = | DVIII | = | 500 + 5 + 1 + 1 + 1 |
| 509 | = | DIX | = | 500 + 10 − 1 |
| 510 | = | DX | = | 500 + 10 |
| 511 | = | DXI | = | 500 + 10 + 1 |