9 in Roman numerals
Roman numeral
IX
I before X, taking one from ten.
How IX 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 |
|---|---|---|
| IX | 9 | 9 |
9 in other forms
- Roman numeral
- IX
- In figures
- 9
- In words
- nine
- Letters used
- 2 letters