Talen 2921 till 2927 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2921 | = | MMCMXXI | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 |
| 2922 | = | MMCMXXII | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 + 1 |
| 2923 | = | MMCMXXIII | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 1 + 1 + 1 |
| 2924 | = | MMCMXXIV | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 − 1 |
| 2925 | = | MMCMXXV | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 |
| 2926 | = | MMCMXXVI | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 + 1 |
| 2927 | = | MMCMXXVII | = | 1000 + 1000 + 1000 − 100 + 10 + 10 + 5 + 1 + 1 |