40 in Roman numerals
Roman numeral
XL
X before L. XXXX is not the standard form.
How XL is built
Read left to right, adding as you go; a smaller letter in front of a larger one is taken away instead, which is what the two-letter pieces below are. The rules in full, and the mistakes they prevent.
| Piece | Value | Running total |
|---|---|---|
| XL | 40 | 40 |
40 in other forms
- Roman numeral
- XL
- In figures
- 40
- In words
- forty
- Letters used
- 2 letters