How to write 10 in Roman numerals
Roman numerals are built place by place, from the largest value to the smallest. For 10 the places are 10 (tens).
- Write 10 as
X.
Joined together, X gives X.
10 digit by digit
| Place | Value | Numeral | Rule used |
|---|---|---|---|
| tens | 10 | X | one symbol |
Check X by reading it back
Reading X from left to right and adding the pieces: X = 10. Together that is 10, so X and 10 match.
Mistakes to avoid with X
- Only I, X and C may be placed before a larger symbol to subtract, so X never contains forms such as VX or LC.
- Read X as one number, not letter by letter: add the values left to right, except where a smaller symbol sits before a larger one.
Facts about the number 10
- 10 is an even number and composite, with prime factors 2 x 5.
- In binary 10 is
1010and in hexadecimal it isA. - Written out, 10 is "ten".
- The digits of 10 add up to 1.
Where you will see 10 in Roman numerals
Super Bowl games famously used the number 10 written as X for their tenth championship event. You can also spot it on clock faces at the top left. Event organizers adopted this lettering to make annual spectacles feel timeless and distinct from ordinary sports scheduling.
Numbers near 10
FAQ
What is 10 in Roman numerals?
10 is written X in Roman numerals. It is built from X (10).
How do you write 10 in lowercase Roman numerals?
Lowercase Roman numerals use the same rules, so 10 is x. Lowercase is common for page numbers in a book's preface and for outline levels.
How do I convert any number to Roman numerals?
Split the number into thousands, hundreds, tens and ones, write each part with the symbols I, V, X, L, C, D and M, then join them from largest to smallest. Or paste it into the Roman numeral converter, which also converts back.
More roman numerals
- 9 (IX): previous page
- 11 (XI): next page
- Roman numerals chart: the full list