The numbers 515 to 521 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 515 | = | DXV | = | 500 + 10 + 5 |
| 516 | = | DXVI | = | 500 + 10 + 5 + 1 |
| 517 | = | DXVII | = | 500 + 10 + 5 + 1 + 1 |
| 518 | = | DXVIII | = | 500 + 10 + 5 + 1 + 1 + 1 |
| 519 | = | DXIX | = | 500 + 10 + 10 − 1 |
| 520 | = | DXX | = | 500 + 10 + 10 |
| 521 | = | DXXI | = | 500 + 10 + 10 + 1 |