The numbers 1925 to 1931 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 1925 | = | MCMXXV | = | 1000 + 1000 − 100 + 10 + 10 + 5 |
| 1926 | = | MCMXXVI | = | 1000 + 1000 − 100 + 10 + 10 + 5 + 1 |
| 1927 | = | MCMXXVII | = | 1000 + 1000 − 100 + 10 + 10 + 5 + 1 + 1 |
| 1928 | = | MCMXXVIII | = | 1000 + 1000 − 100 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1929 | = | MCMXXIX | = | 1000 + 1000 − 100 + 10 + 10 + 10 − 1 |
| 1930 | = | MCMXXX | = | 1000 + 1000 − 100 + 10 + 10 + 10 |
| 1931 | = | MCMXXXI | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 1 |