Roman Numerals Adding value to letters I, V, X, L, C, D, M 11/30/2018

Romans preferred capital letters Values: I, V, X, L, C, D, M 1, 5, 10, 50, 100, 500, 1,000        11/30/2018

From one to twenty I= 1 II= 2 III= 3 IV= 4 V= 5 VI= 6 VII= 7 VIII= 8 IX= 9 X= 10 XI=11 XII= 12 XIII= 13 XIV= 14 XV= 15 XVI= 16 XVII= 17 XVIII= 18 XIX= 19 XX= 20 11/30/2018

The importance of one and five I, V, X, L, C, D, M Values: 1, 5, 10, 50, 100, 500, 1,000        11/30/2018

Only one time V... VII XXV CCCVIII L... LXX CCLIII MMLV V, L, and D can be used only once: V... VII XXV CCCVIII L... LXX CCLIII MMLV D... DCCX MDXX MDCCLXXVI 11/30/2018

Up to three times I... VIII LII CXVI X... LXX CLXXX DXVI I, X, C, and M can be used up to three times: I... VIII LII CXVI X... LXX CLXXX DXVI C... DCCX MDCXX MDCCC M… MMV MMMD MCDXCII 11/30/2018

Writing 4, 9, 40, 90, 400, and 900 I... V= 5 IV = 5 -1 X= 10 IX= 10 -1 Subtract values positioning I, X, and C at the left: I... V= 5 IV = 5 -1 X= 10 IX= 10 -1 X... L= 50 XL= 50 -10 C= 100 XC= 100 -10 C... D= 500 CD= 500 -100 M= 1000 CM= 1000 -100 11/30/2018

Practice MCDXCII MCMXLV MDCXX MCMXCIX MDCCLXXVI MM MCMXIV MMV 11/30/2018

Answers MCDXCII MCMXLV MDCXX MCMXCIX MDCCLXXVI MM MCMXIV MMV 1,492 1,945 1,620 1,999 1,776 2,000 1,914 2,005 11/30/2018

We still use them… Roman numerals are used today: To announce important events In book chapters In clocks Can you find out where else do the Roman Numerals are used today? 11/30/2018