The numbers 397 to 403 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 397 | = | CCCXCVII | = | 100 + 100 + 100 + 100 − 10 + 5 + 1 + 1 |
| 398 | = | CCCXCVIII | = | 100 + 100 + 100 + 100 − 10 + 5 + 1 + 1 + 1 |
| 399 | = | CCCXCIX | = | 100 + 100 + 100 + 100 − 10 + 10 − 1 |
| 400 | = | CD | = | 500 − 100 |
| 401 | = | CDI | = | 500 − 100 + 1 |
| 402 | = | CDII | = | 500 − 100 + 1 + 1 |
| 403 | = | CDIII | = | 500 − 100 + 1 + 1 + 1 |