ROMAN NUMBERS
Working Rule
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Natural Numbers | Roman Numbers | |
1 __ 2o | I–XX | |
30 | XXX | |
40 | XL | |
50 | L | |
60 | LX | |
90 | XC | |
100 | C | |
500 | D | |
1000 | M |
Working Rule
If any letter of less value is written after the letter of more value, then its value will be added.
Example- XIV= 10 + 4= 14
LX = 50 + 10 = 60
If any letter of less value is written before the letter of more value, then its value will be subtracted.
Example – IX= 10- 1= 9
XL = 50 – 10 = 40
XC = 100 – 10 = 90
CM = 1000- 100 = 900
Convert Roman numbers into natural numbers-
XXXIV= 10 + 10+ 10 + ( 5-1)= 34
CMXXX= ( 1000- 100) + 10 + 10 + 10= 930
DVI = 500 + ( 5+1) = 506
MCXIV= 1000 + 100 + 10 + ( 5-1)= 1114
Convert numbers into Roman numbers
127 = CXXVII
1349 = MCCCXLIX
47 = XLVII