Roman Numerals
Ancient Romans used a special method of showing numbers
Examples: They wrote III instead of 3
And wrote IX instead of 9
The Roman Symbols
Romans Numerals are based on the following symbols:
1

5

10

50

100

500

1000

I

V

X

L

C

D

M

Basic Combinations
Which can be combined like this:
Forming Numbers – The Rules
When a symbol appears after a larger symbol it is added
 Example: VI = V + I = 5 + 1 = 6
But if the symbol appears before a larger symbol it is subtracted
 Example: IX = X – I = 10 – 1 = 9
Don’t use the same symbol more than three times in a row.
Remember: After Larger is Added
On a desktop computer children can try and test their roman numeral skills on this game here
Test yourself on the following romans numerals page here
Using a roman numeral calculator here to see if you have got your answers correct.