| Unités de mille | Centaines | Dizaines | Unités | ||||
| 1000 | M | 100 | C | 10 | X | 1 | I |
| 2000 | MM | 200 | CC | 20 | XX | 2 | II |
| 3000 | MMM | 300 | CCC | 30 | XXX | 3 | III |
| 4000 | MMMM | 400 | CD | 40 | XL | 4 | IV |
| 5000 | V | 500 | D | 50 | L | 5 | V |
| 6000 | VI | 600 | DC | 60 | LX | 6 | VI |
| 7000 | VII | 700 | DCC | 70 | LXX | 7 | VII |
| 8000 | VIII | 800 | DCCC | 80 | LXXX | 8 | VIII |
| 9000 | IX | 900 | CM | 90 | XC | 9 | IX |