Roman Numerals used to be the standard numbering system and method of Arithmetic in Ancient Rome and Europe until about 900 AD. A combination of letters was used to signify value.
The values are:
I = 1
V = 5
X = 10
L = 50
C = 100
D = 500
M = 1 000
When you print the worksheets for the roman numeral conversions, you will find the answers on the second page of the PDF worksheet.
Worksheets 1 and 2 are to 20, worksheets 3 and 4 are to 50, worksheets 5 and 6 are to 100 and worksheets 7 and 8 are to 1000.
