29 in Roman numerals
29 is written XXIX. In chunks: X (10) + X (10) + IX (9) = 29.
The answer
XXIX
29 in Roman numerals is XXIX.
How XXIX is built
To write it, split 29 into 20 + 9. 20 is XX, 9 is IX, so 29 is XX then IX: XXIX.
To read it, XXIX has 3 chunks, and IX is a take-away pair, worked out first and then added.
| Chunk | Worth | Why |
|---|---|---|
| X | 10 | Add |
| X | 10 | Add |
| IX | 9 | I before X: take away |
The mistake to watch for
Writing 29 as XXVIIII
Wrong: XXVIIII
XXVIIII writes I four times in a row. Never more than three: 9 is IX, one before ten, which makes 29 XXIX.
Check it with the converter
Type XXVIIII to see why XXVIIII is not 29. The rule numbers it gives are the three rules on the Roman numerals page.
Converter set to XXIX (29).
Keep going
Questions parents ask
What is 29 in Roman numerals?
29 is XXIX.
What comes before and after XXIX?
28 is XXVIII and 30 is XXX.
Does XXIX use subtraction?
Yes, once: I comes before the bigger X, so IX is 9. The other letters are added.
What is the biggest letter in XXIX?
X, which is 10. XXIX has 4 letters.
Careful reading is an 11+ skill
Reading all 4 letters of XXIX in order is the careful checking 11+ papers reward. The free diagnostic covers all four subjects, with no card needed.