10 in Roman Numerals
10 is written as X in Roman numerals.
How X is built
Roman numerals are written one place value at a time, largest first. 10 splits into 10 (tens), and each piece becomes its own group of symbols:
| Symbol | Value | Running total | Note |
|---|---|---|---|
| X | 10 | 10 |
Read left to right, the symbols add up: 10 = 10. X needs no subtractive pairs: every symbol in it is simply added, because no place value of 10 is a 4 or a 9.
The symbol X (10) is the largest one used to build X -- it also shows up in 81 other numbers between 1 and 100.
Frequently Asked Questions
What is 10 in Roman numerals?
10 in Roman numerals is X. It is built from 1 symbol group: X (10).
How do you write X as a number?
Add the symbol values left to right, subtracting whenever a smaller symbol sits before a larger one: 10 = 10.
Does X use subtractive notation?
No. None of the place values of 10 is a 4 or a 9, so every symbol in X is simply added.
What comes before and after 10 in Roman numerals?
9 is IX and 11 is XI. Counting up in Roman numerals changes only the lowest place until it rolls over, the same way decimal digits do.
How long is X compared to other numbers near 10?
X is 1 character long. Roman numerals don't get longer in a straight line with the number they represent -- IX (9) is 2 characters and XI (11) is 2 characters, because each number is rebuilt from scratch out of the largest symbols that fit, not incremented digit by digit.
More Number Conversions
- Roman Numeral Converter (convert any number)
- Factors of 10
Nearby numbers
8 is VIII, 9 is IX, 11 is XI, 12 is XII.
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