27 in Roman numerals at a glance
- Roman numeral
- XXVII
- Lowercase
- xxvii
- Letters
- 5
- Parts
- X · X · V · I · I
- Subtractive pairs
- None
- In words
- twenty-seven
- Latin name
- viginti septem
How XXVII is built
Roman numerals are written one decimal place at a time, from the largest place to the smallest. Converting each digit of 27 separately and joining the pieces gives XXVII:
| Place | Digit | Value | Numeral |
|---|---|---|---|
| Tens | 2 | 20 | XX |
| Ones | 7 | 7 | VII |
Reading it back, left to right:
- X = 10 → running total 10
- X = 10 → running total 20
- V = 5 → running total 25
- I = 1 → running total 26
- I = 1 → running total 27
The rules XXVII follows
- Largest to smallest. XXVII uses the symbols X, V and I (5 characters in all), and the values never increase from left to right except inside a subtractive pair.
- No subtraction needed. None of the digits of 27 is a 4 or a 9, so XXVII is purely additive: just add the symbol values.
- Repetition. XX repeats X two times and II repeats I two times. I, X, C and M may repeat up to three times in a row; V, L and D never repeat.
Where you will see XXVII
- The U.S. Constitution. Amendments are often cited in Roman numerals: Amendment XXVII delays congressional pay changes until after the next election (ratified in 1992).
- The modern Summer Games. They are officially numbered by Olympiad; the Games of the XXVII Olympiad belong to 2000: Sydney.
- Championship games. Pro football numbers its championship game with Roman numerals, starting from game I in January 1967. Game XXVII was played in early 1993.
- Volumes and sequels. Book volumes, conference editions, film sequels and anniversary events often carry a Roman numeral; edition XXVII would be the 27th.
Numbers near 27 in Roman numerals
Frequently asked questions
How do you write 27 in Roman numerals?
27 is written XXVII. Break it into X (10), X (10), V (5), I (1), I (1) and add the parts: 10 + 10 + 5 + 1 + 1 = 27.
What is 27 in Latin?
The Latin cardinal number 27 is “viginti septem.” The Romans wrote it as XXVII.
What is XXVII plus one?
XXVII + I = XXVIII (28). Adding one can change the whole ending of a numeral, which is why it helps to convert to digits, add, and convert back.