The numbers 1919 to 1925 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 1919 | = | MCMXIX | = | 1000 + 1000 − 100 + 10 + 10 − 1 |
| 1920 | = | MCMXX | = | 1000 + 1000 − 100 + 10 + 10 |
| 1921 | = | MCMXXI | = | 1000 + 1000 − 100 + 10 + 10 + 1 |
| 1922 | = | MCMXXII | = | 1000 + 1000 − 100 + 10 + 10 + 1 + 1 |
| 1923 | = | MCMXXIII | = | 1000 + 1000 − 100 + 10 + 10 + 1 + 1 + 1 |
| 1924 | = | MCMXXIV | = | 1000 + 1000 − 100 + 10 + 10 + 5 − 1 |
| 1925 | = | MCMXXV | = | 1000 + 1000 − 100 + 10 + 10 + 5 |