87 in Roman numerals
87 is written LXXXVII. In chunks: L (50) + X (10) + X (10) + X (10) + V (5) + I (1) + I (1) = 87.
The answer
LXXXVII
87 in Roman numerals is LXXXVII.
How LXXXVII is built
To write it, split 87 into 80 + 7. 80 is LXXX, 7 is VII, so 87 is LXXX then VII: LXXXVII.
To read it, LXXXVII has 7 chunks, and none of them is a take-away pair, so every chunk is added.
| Chunk | Worth | Why |
|---|---|---|
| L | 50 | Add |
| X | 10 | Add |
| X | 10 | Add |
| X | 10 | Add |
| V | 5 | Add |
| I | 1 | Add |
| I | 1 | Add |
The mistake to watch for
Writing 87 as XXCVII
Wrong: XXCVII
XXCVII tries to take two X's away from C. Only one smaller letter can go in front of a bigger one, so 80 is LXXX (50 + 30), which makes 87 LXXXVII.
Check it with the converter
Type XXCVII to see why XXCVII is not 87. The rule numbers it gives are the three rules on the Roman numerals page.
Converter set to LXXXVII (87).
Keep going
Questions parents ask
What is 87 in Roman numerals?
87 is LXXXVII.
What comes before and after LXXXVII?
86 is LXXXVI and 88 is LXXXVIII.
Does LXXXVII use subtraction?
No. Every letter in LXXXVII is the same size as, or smaller than, the letter before it, so you just add them all.
What is the biggest letter in LXXXVII?
L, which is 50. LXXXVII has 7 letters.
Careful reading is an 11+ skill
Reading all 7 letters of LXXXVII in order is the careful checking 11+ papers reward. The free diagnostic covers all four subjects, with no card needed.