ROMAN numbers in maths and their rules
Posted by
Ravi Kumar at Tuesday, January 20, 2009
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ROMAN numbers in maths and their rules:
some of the ROMAN numerals and their corresponding indoarabic numerals:
I  1
V  5
X  10
L  50
C  100
D  500
M  1000
While writing ROMAN numbers, the following rules are to be kept in mind.
1. If a digit is repeated a number of times, the value of the digit is added as many times as it occurs.
examples: II = 1+1 = 2
XXX = 10+10+10 = 30
MM = 1000+1000 = 2000
2. To write a number in which the smallest digit always comes to the right of the right of the greater digit, we add all the values of all the digits.
examples: VIII = 5+1+1+1 = 8
LXVI = 50+10+5+1 = 66
DCLXVII = 500+100+50+10+5+1+1 = 667
3. TO WRITE A NUMBER IN WHICH the smaller digit is placed before the greater digit. we subtract the value of the smaller digit from that of the greater digit.
examples: IV = 51 =4
XL = 5010 = 40
LIX = 50+(101) = 59