# The Roman Numeration System

### Ashley Gray

## Timeline

## What's the Base?

~ 10 was chosen because this system was made for traders who before this had to count on their fingers. It makes sense for the base 10 when you think that they already counted by tens because of their 10 fingers.

## Symbols

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

## Patterns

~Sequences of letters are always written highest to lowest

~Sequences are always read left to right

~You can not use the same letter more than 3 times in a row

## How to Calculate

Example IIV = 3

~If a letter is placed after a letter of greater value, the you add the smaller to the larger. Example VII = 7

~A bar above the letter sequence multiplies the value by 1000

## Anything Else?

~There is no way to calculate fractions

## What's Something Interesting about the Roman Empire?

~Emperors would poison themselves a little bit everyday to gain immunity. Obviously this didn't work.

## Citations

*The Math Forum*. Drexel University School of Education, Web. 9 Dec. 2015.

"Roman Numerals ." *Roman Numerals *. N.p., Web. 9 Dec. 2015.

Hom, Elaine J. "Roman Numerals: Conversion, Meaning & Origins." *Live Science*. N.p., 15 May 2013. Web. 9 Dec. 2015.

Jacobsen, Barry C. "The Age of Arthur: Part Seven." *Deadliest Blogger*. N.p., 15 Oct. 2014. Web. 9 Dec. 2015.

Traiani, Forum. "The Roman Empire." *Forum Traiani*. N.p., 26 Sept. 2013. Web. 9 Dec. 2015.

Sidebottom, Harry. "10 Things You (Probably) Didn't Know About the Romans ."*History Extra*. BBC, Mar. 2015. Web. 9 Dec. 2015.