Talen 3921 till 3927 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 3921 | = | MMMCMXXI | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 |
| 3922 | = | MMMCMXXII | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 + 1 |
| 3923 | = | MMMCMXXIII | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 + 1 + 1 |
| 3924 | = | MMMCMXXIV | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 − 1 |
| 3925 | = | MMMCMXXV | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 |
| 3926 | = | MMMCMXXVI | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 + 1 |
| 3927 | = | MMMCMXXVII | = | 1000 + 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 + 1 + 1 |