Why the 45 part uses a hyphen
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 45, the 45 part combines forty and five, producing forty-five.
Number Digit tool
Learn how to write 45 in English words, see the correct spelling, and move to the previous or next number.
45 in words is forty-five.
| Style | Words |
|---|---|
| American English | forty-five |
| British English | forty-five |
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 45, the 45 part combines forty and five, producing forty-five.