Why the 27 part uses a hyphen
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 27, the 27 part combines twenty and seven, producing twenty-seven.
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27 in words is twenty-seven.
27 = 2 tens + 7 ones
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Write 27 in words:
| Style | Words |
|---|---|
| American English | twenty-seven |
| British English | twenty-seven |
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 27, the 27 part combines twenty and seven, producing twenty-seven.