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

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

3. 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

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

5. 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

6. 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

7. 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= IV = X= IX= 10 -1
X L= XL= C= XC=
C D= CD= M= CM=
11/30/2018

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

9. 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

10. 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