Talen 3900 till 3906 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 3900 | = | MMMCM | = | 1000 + 1000 + 1000 + 1000 − 100 |
| 3901 | = | MMMCMI | = | 1000 + 1000 + 1000 + 1000 − 100 + 1 |
| 3902 | = | MMMCMII | = | 1000 + 1000 + 1000 + 1000 − 100 + 1 + 1 |
| 3903 | = | MMMCMIII | = | 1000 + 1000 + 1000 + 1000 − 100 + 1 + 1 + 1 |
| 3904 | = | MMMCMIV | = | 1000 + 1000 + 1000 + 1000 − 100 + 5 − 1 |
| 3905 | = | MMMCMV | = | 1000 + 1000 + 1000 + 1000 − 100 + 5 |
| 3906 | = | MMMCMVI | = | 1000 + 1000 + 1000 + 1000 − 100 + 5 + 1 |