The numbers 39 to 45 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 39 | = | XXXIX | = | 10 + 10 + 10 + 10 − 1 |
| 40 | = | XL | = | 50 − 10 |
| 41 | = | XLI | = | 50 − 10 + 1 |
| 42 | = | XLII | = | 50 − 10 + 1 + 1 |
| 43 | = | XLIII | = | 50 − 10 + 1 + 1 + 1 |
| 44 | = | XLIV | = | 50 − 10 + 5 − 1 |
| 45 | = | XLV | = | 50 − 10 + 5 |