Roman Numerals - Ancient Rome - Roman Numbers
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Roman Numerals

The Romans used several different systems for writing numbers. Sometimes they wrote numbers like this: I II III IV V and other times they used the Greek numbers. Roman people didn't always write numbers the same way, either - people knew what you meant even if you did it a little differently. Here's a table showing all of the Roman numerals.

I
1
                   
L
50
II
2

C
100
III
3

D
500
IV (or IIII)
4

M
1000
V
5



VI
6



VII
7



VIII
8



IX (or VIIII)
9



X
10



So MMIII is 2003, and XXIV is 24, and CLVII is 157. (Putting a bigger number like V after a smaller number like I means "1 less than 5" or 4).

Try writing these numbers in Roman numbers (see the second page for the answers):

314

26

1975

2010

Bibliography and further reading about Roman numbers:

Indian numbers
More about Roman Numbers
Roman Science
Ancient Rome
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Karen Carr is Associate Professor Emerita, Department of History, Portland State University. She holds a doctorate in Classical Art and Archaeology from the University of Michigan. Follow her on Instagram or Twitter.
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