The numbers 409 to 415 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 409 | = | CDIX | = | 500 − 100 + 10 − 1 |
| 410 | = | CDX | = | 500 − 100 + 10 |
| 411 | = | CDXI | = | 500 − 100 + 10 + 1 |
| 412 | = | CDXII | = | 500 − 100 + 10 + 1 + 1 |
| 413 | = | CDXIII | = | 500 − 100 + 10 + 1 + 1 + 1 |
| 414 | = | CDXIV | = | 500 − 100 + 10 + 5 − 1 |
| 415 | = | CDXV | = | 500 − 100 + 10 + 5 |