What are Roman Numerals?

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What are Roman Numerals? A series of letters that the Romans used as their numerical system What are the numerals?

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

A letter placed AFTER a greater value adds;

XVI = 10 + 5 + 1 = 16 A letter placed BEFORE a greater value subtracts;

XIX = 10 + (10 - 1) = 19 Here are some important Roman Numeral examples I =1 II = 2 III = 3 IV = 4 V =5 VI = 6 VII = 7 VIII = 8 IX = 9 X = 10 XV = 15

XX XXX XL L LX LXX LXXX XC C CL CC

= 20 = 30 = 40 = 50 = 60 = 70 = 80 = 90 = 100 = 150 = 200

CCC = 300 = 400 CD = 500 D = 600 DC DCC = 700 DCCC = 800 = 900 CM = 1000 M MCD = 1400 = 1500 MD MCM = 1900

Challenge! What is the current year expressed in Roman Numerals?

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