Talen 1913 till 1919 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1913 | = | MCMXIII | = | 1000 + 1000 − 100 + 10 + 1 + 1 + 1 |
| 1914 | = | MCMXIV | = | 1000 + 1000 − 100 + 10 + 5 − 1 |
| 1915 | = | MCMXV | = | 1000 + 1000 − 100 + 10 + 5 |
| 1916 | = | MCMXVI | = | 1000 + 1000 − 100 + 10 + 5 + 1 |
| 1917 | = | MCMXVII | = | 1000 + 1000 − 100 + 10 + 5 + 1 + 1 |
| 1918 | = | MCMXVIII | = | 1000 + 1000 − 100 + 10 + 5 + 1 + 1 + 1 |
| 1919 | = | MCMXIX | = | 1000 + 1000 − 100 + 10 + 10 − 1 |