---
title: "980 in Roman numerals is CMLXXX"
description: "980 in Roman numerals is CMLXXX, written as 900 + 50 + 10 + 10 + 10. How it breaks down, how to write it, and the numbers either side."
url: https://atoneplace.net/roman-numerals/980/
site: "At One Place"
---

# 980 in Roman numerals

**980 in Roman numerals: CMLXXX**

980 is written CMLXXX in Roman numerals. That is 5 symbol groups added together, reading left to right from the largest value down.

## How it breaks down

*CMLXXX = 900 + 50 + 10 + 10 + 10 = 980*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| CM | 900 | M − C | 900 |
| L | 50 | — | 950 |
| X | 10 | — | 960 |
| X | 10 | — | 970 |
| X | 10 | — | 980 |

## Why the smaller symbol comes first

CMLXXX uses subtractive notation in one place: CM means M minus C, or 900. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

## The symbols

| Symbol | Value | Used here |
| --- | --- | --- |
| I | 1 | no |
| V | 5 | no |
| X | 10 | yes — 3× |
| L | 50 | yes — 1× |
| C | 100 | yes — 1× |
| D | 500 | no |
| M | 1,000 | yes — 1× |

## The same number, other ways

- **In words:** Nine hundred eighty
- **Roman numeral:** CMLXXX
- **Symbol count:** 6 characters
- **Binary:** 1111010100
- **Hexadecimal:** 3D4

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 978 | CMLXXVIII |
| 979 | CMLXXIX |
| 980 | CMLXXX ← |
| 981 | CMLXXXI |
| 982 | CMLXXXII |

## Common questions

### What is 980 in Roman numerals?

980 is CMLXXX.

### What does CMLXXX mean?

CMLXXX is the Roman numeral for 980 — 900 + 50 + 10 + 10 + 10.

### How do you write 980 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: CM (900), then L (50), then X (10), then X (10), then X (10). That gives CMLXXX.

## Related pages

- [978 in Roman numerals](https://atoneplace.net/roman-numerals/978/)
- [979 in Roman numerals](https://atoneplace.net/roman-numerals/979/)
- [981 in Roman numerals](https://atoneplace.net/roman-numerals/981/)
- [982 in Roman numerals](https://atoneplace.net/roman-numerals/982/)
- [4 in Roman numerals](https://atoneplace.net/roman-numerals/4/)
- [9 in Roman numerals](https://atoneplace.net/roman-numerals/9/)
- [14 in Roman numerals](https://atoneplace.net/roman-numerals/14/)
- [19 in Roman numerals](https://atoneplace.net/roman-numerals/19/)
- [40 in Roman numerals](https://atoneplace.net/roman-numerals/40/)
- [42 in Roman numerals](https://atoneplace.net/roman-numerals/42/)
- [49 in Roman numerals](https://atoneplace.net/roman-numerals/49/)
- [50 in Roman numerals](https://atoneplace.net/roman-numerals/50/)

## Sources

- Calculated on this page — At One Place (/about/)