Why the 66 part uses a hyphen
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 66, the 66 part combines sixty and six, producing sixty-six.
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66 in Words
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66 in Words
66 in words is sixty-six.
English Style Variants
| Style | Words |
|---|---|
| American English | sixty-six |
| British English | sixty-six |