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Roman numeral is a number system that originated in ancient roman. Ancient Romans used some special notation to show numbers. In this system, the numbers are represented by the Latin alphabets.
| 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
| I | V | X | L | C | D | M |
Combination of Roman numerals:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| I | II | III | IV | V | VI | VII | VIII | IX |
| 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| X | XX | XXX | XL | L | LX | LXX | LXXX | XC |
| 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 |
| C | CC | CCC | CD | D | DC | DCC | DCCC | CM |
Rules for forming numbers:
- If a symbol is repeated, its value is added as many times as it occurs. For example, \(XXX = 10+10+10 =30, DCC =500 +100+100 = 700\)
- Any symbol appears after the large symbol, add it. For example, \(VII = V+II = 5 + 2 = 7\).
- Any symbol appears before the large symbol, subtract it. For example, \(XIX = X+IX = 10+(10-1) = 10+9 = 19\)
Important!
Same symbols cannot be used more than three times continuously.
Write in Roman numeral form:
Example:
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