Why the 78 part uses a hyphen
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 78, the 78 part combines seventy and eight, producing seventy-eight.
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78 in words is seventy-eight.
78 = 7 tens + 8 ones
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Write 78 in words:
| Style | Words |
|---|---|
| American English | seventy-eight |
| British English | seventy-eight |
Compound numbers from 21 through 99 join the tens word and the ones word with a hyphen. In 78, the 78 part combines seventy and eight, producing seventy-eight.