Top: Kids: School: Math: Numbers: Roman Numerals



[ history ]

Facts

no place value - each symbol used as often as needed
no symbol for zero
values of symbols added or subtracted
5 probably came from ‘one hand’
10 probably came from ‘two hands’
lesser numbers to left are subtracted
lesser numbers to right are added


[ history ]

Basic numerals

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


[ history ]

Numeral structure = A / B / C

A = subtract from B
B = main number
C = add from B


[ history ]

Examples

499 = ID
3 = III
30 = XXX
300 = CCC
IV = 4
VI = 6
VII = 7
II1 = 3
IIX = 8 



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