Talen 3420 till 3426 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 3420 | = | MMMCDXX | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 |
| 3421 | = | MMMCDXXI | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 1 |
| 3422 | = | MMMCDXXII | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 1 + 1 |
| 3423 | = | MMMCDXXIII | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 1 + 1 + 1 |
| 3424 | = | MMMCDXXIV | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 5 − 1 |
| 3425 | = | MMMCDXXV | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 5 |
| 3426 | = | MMMCDXXVI | = | 1000 + 1000 + 1000 + 500 − 100 + 10 + 10 + 5 + 1 |