# Do we hyphen ordinal numbers written in letters? [closed]

Knowing that we hyphen compound numbers under 100. Do we do the same for the ones used for ranks? Every website I've looked at teaches how to hyphen cardinal numbers (67, 82, 34,...) but does not say what to do with ordinal numbers (67th, 82nd, 34th,...).

As an alternative, I've tried to deduce a rule by looking up examples from Reverso, however what I've seen does not relate to what I look for.

So how should I hyphen these:

• twenty(-)second

• eighty(-)first

• five(-)hundred(-)and(-)sixty(-)fith

I'm just guessing but, if the principle is the same as for cardinal numbers, then this is how I would hyphen them, though I could totally be wrong:

• twenty-second --> Because the cardinal would be "twenty-two"

• eighty-first --> Because the cardinal would be "eighty-one"

• five hundred and sixty-fith --> Because the cardinal would be "five hundred and sixty-five".

If possible, could anyone provide me with a link to a website that covers this?