Talen 1980 till 1986 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1980 | = | MCMLXXX | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 |
| 1981 | = | MCMLXXXI | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 1 |
| 1982 | = | MCMLXXXII | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 1 + 1 |
| 1983 | = | MCMLXXXIII | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |
| 1984 | = | MCMLXXXIV | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 5 − 1 |
| 1985 | = | MCMLXXXV | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 5 |
| 1986 | = | MCMLXXXVI | = | 1000 + 1000 − 100 + 50 + 10 + 10 + 10 + 5 + 1 |