# The History of Roman Numerals: Rules and Symbols
> Learn the origins, 7 key symbols, and rules for addition and subtraction in the Roman numeral system in this comprehensive guide.

Tags: roman-numerals, ancient-rome, history-of-numbers, mathematics, latin-numbers, educational
## The History of Roman Numerals
* Origin: Ancient Rome, used for nearly 1,800 years in Europe.
* Symbols are based on hand signals used by shepherds (e.g., I, V, X).

## The 7 Key Symbols
* I = 1
* V = 5
* X = 10
* L = 50
* C = 100
* D = 500
* M = 1000

## Core Rules of Roman Numerals
* **Addition Rule:** Add smaller symbols when placed AFTER a larger one (VI = 6).
* **Subtraction Rule:** Subtract smaller symbols (I, X, C) when placed BEFORE a larger one (IV = 4).
* **Rule of Three:** A symbol cannot be repeated more than 3 times in a row.

## Modern Day Usage
* Roman numerals are still used for clock faces, Super Bowl names, and the titles of Kings and Queens.

## Practice Example
* MMXXIV = 1000 + 1000 + 10 + 10 + (5-1) = 2024
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