Talen 1930 till 1936 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1930 | = | MCMXXX | = | 1000 + 1000 − 100 + 10 + 10 + 10 |
| 1931 | = | MCMXXXI | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 1 |
| 1932 | = | MCMXXXII | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 1 + 1 |
| 1933 | = | MCMXXXIII | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 1 + 1 + 1 |
| 1934 | = | MCMXXXIV | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 5 − 1 |
| 1935 | = | MCMXXXV | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 5 |
| 1936 | = | MCMXXXVI | = | 1000 + 1000 − 100 + 10 + 10 + 10 + 5 + 1 |