84 in Roman numerals at a glance
- Roman numeral
- LXXXIV
- Lowercase
- lxxxiv
- Letters
- 6
- Parts
- L · X · X · X · IV
- Subtractive pairs
- IV
- In words
- eighty-four
- Latin name
- octoginta quattuor
How LXXXIV is built
Roman numerals are written one decimal place at a time, from the largest place to the smallest. Converting each digit of 84 separately and joining the pieces gives LXXXIV:
| Place | Digit | Value | Numeral |
|---|---|---|---|
| Tens | 8 | 80 | LXXX |
| Ones | 4 | 4 | IV |
Reading it back, left to right:
- L = 50 → running total 50
- X = 10 → running total 60
- X = 10 → running total 70
- X = 10 → running total 80
- IV = 4 (V minus I) → running total 84
The rules LXXXIV follows
- Largest to smallest. LXXXIV uses the symbols L, X, I and V (6 characters in all), and the values never increase from left to right except inside a subtractive pair.
- Subtraction. IV (4) is a subtractive pair: a smaller symbol in front of a larger one is taken away from it. Only six pairs are allowed — IV, IX, XL, XC, CD and CM — and LXXXIV uses one of them.
- Repetition. XXX repeats X three times. I, X, C and M may repeat up to three times in a row; V, L and D never repeat.
Common mistakes when writing 84
- LXXXIIII — wrong because standard numerals never repeat a symbol four times; 4 is written IV. The correct form is LXXXIV.
Where you will see LXXXIV
- Championship games. Pro football numbers its championship game with Roman numerals, starting from game I in January 1967. Game LXXXIV falls in early 2050.
- Volumes and sequels. Book volumes, conference editions, film sequels and anniversary events often carry a Roman numeral; edition LXXXIV would be the 84th.
Numbers near 84 in Roman numerals
| Number | Roman numeral | Letters |
|---|---|---|
| 80 | LXXX | 4 |
| 81 | LXXXI | 5 |
| 82 | LXXXII | 6 |
| 83 | LXXXIII | 7 |
| 84 | LXXXIV | 6 |
| 85 | LXXXV | 5 |
| 86 | LXXXVI | 6 |
| 87 | LXXXVII | 7 |
| 88 | LXXXVIII | 8 |
Frequently asked questions
How do you write 84 in Roman numerals?
84 is written LXXXIV. Break it into L (50), X (10), X (10), X (10), IV (4) and add the parts: 50 + 10 + 10 + 10 + 4 = 84.
Is LXXXIIII a correct way to write 84?
No. LXXXIIII is wrong because standard numerals never repeat a symbol four times; 4 is written IV. The standard numeral for 84 is LXXXIV.
What is 84 in Latin?
The Latin cardinal number 84 is “octoginta quattuor.” The Romans wrote it as LXXXIV.
What is LXXXIV plus one?
LXXXIV + I = LXXXV (85). Adding one can change the whole ending of a numeral, which is why it helps to convert to digits, add, and convert back.