XXI Roman Numerals
The XXI roman numeral is equal to the number 21.
XXI = 21
What is XXI in roman numerals?
The Roman Numeral XXI represents the number 21.
To convert XXI Roman Numerals to regular numbers, you can either break them down into individual letters and add/subtract their values, or consider groups of numerals for addition or subtraction.
MMCDXV Roman Numerals can be written as numbers by combining the transformed roman numerals i.e. XXI = X + X + I = 10 + 10 + 1 = 21.
| Roman Numeral | X | X | I |
|---|---|---|---|
| Number | 10 | 10 | 1 |
| Calculation | 10 + 10 + 1 = 21 | ||
Therefore, the numerical value of XXI roman numerals is 21.