80 in Words
How do you write 80 in words?
The number 80 is written eighty in words. As an ordinal it is eightieth, and on a check you would write Eighty and 00/100.
Last updated 24 August 2026
Other ways to write it
| Cardinal | eighty |
|---|---|
| Ordinal | eightieth |
| Currency | eighty dollars |
| Check format | Eighty and 00/100 |
How 80 is written
80 occupies one place value, 80 in the tens place, and is written eighty.
Its ordinal form is eightieth — only the final element takes the ordinal ending — and on a check the amount line reads "Eighty and 00/100", where 00/100 stands for zero cents.
For house-style rules on spelling out numbers, see the Chicago Manual of Style.
Facts about 80
- 80 is an even number.
- It is not a prime number.
- Digit sum: 8.
- Roman numerals: LXXX.
- Binary: 1010000.
- Hexadecimal: 50.
| Digit | Place |
|---|---|
| 8 | tens |
| 0 | ones |
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Frequently asked questions
How do you write 80 in words?
80 in words is "eighty".
How do you spell 80?
80 is spelled "eighty".
How do you write 80 on a check?
On a check, write "Eighty and 00/100".