Roman Numerals

Northern Computer Lab

The Roman Numeral System is based on 7 different symbols. This system was developed in ancient Rome.

ROMAN NUMERALS

ROMAN NUMERALSRoman numerals use letters instead of numbers. There are seven letters you need to know:

• I = 1• V = 5• X = 10• L = 50• C = 100• D = 500• M = 1000

ROMAN NUMERALS

You make numbers by putting the symbols together. Let’s say you want to make the number 8. You would use the following symbols:

VIII

You never use more than 3 of the same symbol so if you want to make the number 9 you would use the following symbols:

IX

ROMAN NUMERALS

If one or more letters are placed after another letter of greater value, add that amount.

Example: XVI

This number would be 16X=10, V=5, and I=1

ROMAN NUMERALS

A bar placed on top of a letter or string of letters increases the numeral's value by 1,000

ROMAN NUMERALS

WORKS CITEDhttp://www.ducksters.com/kidsmath/roman_numerals.php

http://www.roman-numerals.org/chart100.html

http://www.factmonster.com/ipka/A0769547.html

https://www.google.com/search?q=roman+numeral+15,000&biw=1366&bih=624&source=lnms&tbm=isch&sa=X&ei=CyTqVM-KDMbEggTAuYTgCg&ved=0CAcQ_AUoAg#tbm=isch&q=roman+numberal+chart