1 in Roman Numerals
1 written in Roman numeralsI
1 = I. Read left to right: I (1) = 1.
Going the other way, the Roman numeral I equals the number 1.
How to write 1 in Roman numerals
- Ones: 1 is I.
I uses only additive notation: every symbol is the same size or smaller than the one before it, so you simply add them up.
1 is an odd number, a perfect square (1 × 1) and written with 1 symbol in Roman numerals.
Where you might see I
- On a clock face, I marks 1 o'clock.
- In dates written in Roman numerals, I can stand for the month of January.
- Super Bowl I was the 1st Super Bowl, played in early 1967.
- Book chapters, outlines, movie sequels and royal names use numerals like I for the number 1.
Multiples of I
| Sum | Number | Roman numeral |
|---|---|---|
| 1 × 2 | 2 | II |
| 1 × 3 | 3 | III |
| 1 × 5 | 5 | V |
| 1 × 10 | 10 | X |
Numerals near I
| Number | Roman numeral |
|---|---|
| 1 | I |
| 2 | II |
| 3 | III |
| 4 | IV |
| 5 | V |
| 6 | VI |
Questions
How do you write 1 in Roman numerals?
1 is written I.
What number is I?
I is 1.