## Roman Numerals 101 |

**I**This letter is the most familiar and we use it unconsciously to number our chapters in books. It represents a number**one**.**II**If we add two 'I's together it represents the number**two.****III**And three 'I''s represents the number**three.****IIII**Have you seen a number**four**represented in this way? If you look closely at the old clocks that use Roman numerals, this is exactly what you will see. It makes sense that if you add four 'I''s you'll count till the number**four**. However this can become cumbersome to represent the number two hundred and one using just two hundred and one 'I''s. So the Romans started using a newer letter for every**fifth**increment. This is the familiar letter '**V'**.**IV**You may, however, be more familiar with the 'IV' representation of the number**four**used in most chapter books. This is a way of representing**one**less than**five**. Because the lower value 'I' (one) is written**before**the higher value 'V' (five), it means take one from five.

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Updated:2013/02/02

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