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# How would you work out 1999 plus 1888 in two different ways and 1999 minus 1888 but working out all three calculations entirely in Roman numerals with explanations?

Updated: 10/19/2022

Wiki User

9y ago

Nowadays the modern way of converting 1999 into Roman numerals is now considered to be MCMXCIX but there exist historical evidence to suggest that the ancient Romans would have worked out the equivalent of 1999 on an abacus calculating device as MDCCCCLXXXXVIIII which can be abridged to IMM thus facilitating the speed and ease of the three required calculations as follows:-

IMM+MDCCCLXXXVIII = MMMDCCCLXXXVII => (2000-1)+1888 = 3887

MDCCCCLXXXXVIIII+MDCCCLXXXVIII = MMMDCCCLXXXVII => 1999+1888 = 3887

MDCCCCLXXXXVIIII-MDCCCLXXXVIII = CXI => 1999-1888 = 111

Note: M=1000, D=500, C=100, L=50, X=10, V=5 and I=1

QED

Wiki User

9y ago

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Q: How would you work out 1999 plus 1888 in two different ways and 1999 minus 1888 but working out all three calculations entirely in Roman numerals with explanations?
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