Talen 2721 till 2727 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2721 | = | MMDCCXXI | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 1 |
| 2722 | = | MMDCCXXII | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 1 + 1 |
| 2723 | = | MMDCCXXIII | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 1 + 1 + 1 |
| 2724 | = | MMDCCXXIV | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 5 − 1 |
| 2725 | = | MMDCCXXV | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 5 |
| 2726 | = | MMDCCXXVI | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 5 + 1 |
| 2727 | = | MMDCCXXVII | = | 1000 + 1000 + 500 + 100 + 100 + 10 + 10 + 5 + 1 + 1 |