CDXXI Roman Numerals
CDXXI
421
four hundred twenty-one
How to read CDXXI
| Symbols | Value | Running total |
|---|---|---|
| C (subtracted)D | 500 − 100 = 400 | 400 |
| X | 10 | 410 |
| X | 10 | 420 |
| I | 1 | 421 |
| CDXXI | 421 |
CD is a subtractive pair: the C before the D takes 100 away, so CD is 400, not 600.
Easy to confuse with CDXXI
Numerals near CDXXI
Is CDXXI written correctly?
- Standard form
- Yes
- Letters
- 5
- Subtractive pairs
- CD
- Symbols used
- D, C, X, I