ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

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ROMAN NUMERALS PUBLISHED MMX

Transcript of ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

Page 1: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

ROMAN NUMERALS

PUBLISHED MMX

Page 2: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

THE BASICS

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

Page 3: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

SO HOW DO WE GET OTHER NUMBERS?

ii=2III=3IV=4VI=6Vii=7VIII=8IX=9

HOW DO THESE LETTER WORK TO EQUAL THOSE VALUES?

THE KEY IS IN MATH, ADDITION AND SUBTRACTION.

Page 4: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

ADDITION AND SUBTRACTION???

YES THAT’S RIGHT. LETS TAKE THE NUMBERS 2, 3, 4, 8, & 9

2=I+I (1+1)3=I+I+I (1+1+1)8=V+I+I+I (5+1+1+1)

THESE ARE ADDITION SIMPLE RIGHT?BUT WHAT ABOUT SUBTRACTION?

Page 5: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

SUBTRACTION

The number 4 is noted as IV in this case the I is before the V so I which equals 1is Subtracted from V which equals 5 so5-1=4. The same is true for IX 10-1=9

Page 6: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

THE RULES

The rules are always the same. When ever a ROMAN NUMERAL of a lesser value is listed in front of a numeral ofgreater value the lesser numeral is subtracted from the value of the following numeral. i.e. IX=10-1=9

Page 7: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

THE WRENCH IN THE GEARS

Until the 39 XXXIX is pretty straight forward. One we hit 40 the rules are the same but there are some addition rules that get added to the mix.

Page 8: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

40 thru 49

So how do we list 40 we can’t list 4 repeating X’s. This is first time X is used for subtraction 40 is listed XL. L=50 also to get 49 you cant use IL that is wrong. 49 is written XLIX 50-10+(10-1)=49

Page 9: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

SO WHAT ELSE

If you remember at the beginning I wrote MMX that stood for 2010. But lets list anotheryear say 1999. How on earth would we list that?

Page 10: ROMAN NUMERALS PUBLISHED MMX. THE BASICS I=1 V=5 X=10 L=50 C=100 D=500 M=1000.

1999 is complex yet simple

1999 is listed as MCMXCIX which is 1000+(1000-100)+(100-10)+(10-1)=1999

CONFUSED YET?


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