# Hyphenate number as adjective [duplicate]

If I understand correctly, 105 should be written

one hundred five

as in

The building has one hundred five stories.

But is it

A one-hundred-five-story building

or

A one hundred five-story building

or something else?

Note: I'm familiar with the rules stated in the suggested duplicate, but the answer there doesn't necessarily apply because numbers greater than 20 and less than 100 are hyphenated regardless. My confusion arises when combining the rule that 105 is not hyphenated on its own, but compound adjectives should be hyphenated. Note also that the links in the suggested duplicate are dead, so I rely only on the text of the answer.

## marked as duplicate by FumbleFingers, Davo, Nigel J, Mari-Lou A, tchrist♦Dec 13 '17 at 1:42

• There probably aren't many written instances of [105] storey building, but there are hundreds of references to twenty-two-storey buildings in Google Books. Which as you'll see mostly have just the first hyphen there (note that GB searches don't distinguish between hyphens and spaces, so that search would pick up every variant). – FumbleFingers Dec 11 '17 at 19:08
• @Davo The key difference is that twenty-four is always hyphenated, as it's greater than twenty and less than one hundred. I'll edit my question to illustrate that point. – Eric J. Dec 11 '17 at 21:42
• Ah, I see. You could always use a one hundred and five-story building, but I realize this doesn't answer your question. – Davo Dec 11 '17 at 21:54

• I realize that compound adjectives (two terms modifying a noun) should be hyphenated and two-digit numbers should be hyphenated. My confusion arises from the fact that 105 is a three-digit number, so not hyphenated when it stands on its own. The rule `but don’t hyphenate all the elements of a large number like a chain` leaves me with `one hundred five-story`, which looks odd because `one hundred` is not attached to `five-story`. – Eric J. Dec 11 '17 at 21:48