84 = LXXXIV · the breakdown and the rules
84 in roman numerals
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the answer
84 in roman numerals is LXXXIV.
the answer
84 = LXXXIV
84 in roman numerals is LXXXIV.
the breakdown
Place by place
| Value | Numeral |
|---|---|
| 50 | L |
| 10 | X |
| 10 | X |
| 10 | X |
| 4 | IV |
Write the thousands, then hundreds, tens and ones, each as its own numeral, and join them: LXXXIV.
the rules
The four rules
- I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000.
- A numeral repeats at most three times (III, XXX, CCC); V, L and D never repeat.
- A smaller numeral before a larger one is subtracted: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900. Only I, X and C are subtracted, and only from the next two values.
- Everything else is added, from largest to smallest, left to right.
neighbours
Nearby numbers
| Number | Roman |
|---|---|
| 82 | LXXXII |
| 83 | LXXXIII |
| 84 | LXXXIV |
| 85 | LXXXV |
| 86 | LXXXVI |
try another number
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The answer appears here, with the working in words.
practice
✏️ Five questions, answers hidden
1. Write 87 in roman numerals.
Answer: LXXXVII
2. Write 80 in roman numerals.
Answer: LXXX
3. What number is XCIV?
Answer: 94
4. Write 1994 in roman numerals.
Answer: MCMXCIV
5. Write 2026 in roman numerals.
Answer: MMXXVI
where this is taught
📚 The class this belongs to
Roman numerals are taught in Grade 3 and 4 in the US, Year 4 and 5 in the UK (KS2, to 1000), Class 4 and 5 in CBSE and Year 4 in Australia.
If this page is the homework and the method is not sticking, that is what a 1-on-1 class fixes: one tutor with a master's degree, one child, on a shared whiteboard, in your time zone, about US$10 to $13 an hour. How 1-on-1 online tutoring works.
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Questions
Asked about 84 in roman numerals
1What is 84 in roman numerals?
LXXXIV. 50 is L, then 10 is X, then 10 is X, then 10 is X, then 4 is IV.
2Why is 4 written IV and not IIII?
By the subtraction rule: a smaller numeral placed before a larger one is subtracted, so IV = 5 − 1 = 4. IIII appears on some clock faces but not in standard notation.
3What is 85 in roman numerals?
LXXXV.
4What is the largest number in roman numerals?
3,999 (MMMCMXCIX) in standard notation; larger numbers use a bar over the numeral to multiply by 1,000.