The numbers 2001 to 2007 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 2001 | = | MMI | = | 1000 + 1000 + 1 |
| 2002 | = | MMII | = | 1000 + 1000 + 1 + 1 |
| 2003 | = | MMIII | = | 1000 + 1000 + 1 + 1 + 1 |
| 2004 | = | MMIV | = | 1000 + 1000 + 5 − 1 |
| 2005 | = | MMV | = | 1000 + 1000 + 5 |
| 2006 | = | MMVI | = | 1000 + 1000 + 5 + 1 |
| 2007 | = | MMVII | = | 1000 + 1000 + 5 + 1 + 1 |