Roman Numerals
Roman numerals are written as combinations of the seven letters in the table below. The letters can be written as capital (XVI) or lower-case letters (xvi).
| Roman Numerals | |
|---|---|
| I = 1 | C = 100 |
| V = 5 | D = 500 |
| X = 10 | M = 1000 |
| L = 50 | |
If smaller numbers follow larger numbers, the numbers are added. If a smaller number precedes a larger number, the smaller number is subtracted from the larger. For example:
- VIII = 5+3 = 8
- IX = 10-1 = 9
- XL = 50-10 = 40
- XC = 100-10 = 90
- MCMLXXXIV = 1000+(1000-100)+50+30+(5-1) = 1984
| Roman Numeral table | |||||||
|---|---|---|---|---|---|---|---|
| 1 | I | 14 | XIV | 27 | XXVII | 150 | CL |
| 2 | II | 15 | XV | 28 | XXVIII | 200 | CC |
| 3 | III | 16 | XVI | 29 | XXIX | 300 | CCC |
| 4 | IV | 17 | XVII | 30 | XXX | 400 | CD |
| 5 | V | 18 | XVIII | 31 | XXXI | 500 | D |
| 6 | VI | 19 | XIX | 40 | XL | 600 | DC |
| 7 | VII | 20 | XX | 50 | L | 700 | DCC |
| 8 | VIII | 21 | XXI | 60 | LX | 800 | DCCC |
| 9 | IX | 22 | XXII | 70 | LXX | 900 | CM |
| 10 | X | 23 | XXIII | 80 | LXXX | 1000 | M |
| 11 | XI | 24 | XXIV | 90 | XC | 1600 | MDC |
| 12 | XII | 25 | XXV | 100 | C | 1700 | MDCC |
| 13 | XIII | 26 | XXVI | 101 | CI | 1900 | MCM |
