ROMAN NUMERALS

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ROMAN NUMERALSTHE BASICS
FIRST YOU NEED TO LEARN THE BASIC BUILDING
BLOCKS OF THE ROMAN NUMERAL SYSTEM-- THE 7
LETTERS THAT REPRESENT NUMERICAL VALUES
I1 V5 X10 L50 C100 D500 M1,000
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I1
3
V5
4
X10
5
L50
HALF OF C!
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C100
The first letter in the Latin word for
100 Centum!
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D 500
D sometimes looks like half of the M the Latin
for 1,000!
In carvings on buildings one can find M
as and D as
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M1,000
M IS FOR THE FIRST LETTER IN THE LATIN WORD FOR
1,000 MILLE!
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On the Gloriette at Schoenbrunn in Vienna,
Austria MDCCLXXV1775
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NOW LETS FIND OUT HOW TO BUILD WITH THOSE BLOCKS
Roman numerals generally read from left to
right keep adding from the larger to the
smaller values, similar to Arabic numerals!
III3 VI 6 XI11 XX20 XVI16
XXVI26 326 CCCXXVI

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A CHANGE OCCURS HOWEVERIF YOU ENCOUNTER A
LARGER NUMBER AS YOU MOVE FROM LEFT TO RIGHT
YOU THEN HAVE TO STOP SUBTRACT THE SMALLER
NUMBER FROM THE LARGER ONE THAT FOLLOWS. THIS
ONLY OCCURS WHEN THE RESULTING VALUE IS 4 OR 9!
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IV4 IX9 XIV14 XIX19 XXIV24 XXIX29 XL40
XLIX49 CD400 CM900 SO CCLI? DCCC?
DXXVI BUT CMLXXII CDLIX LXXXIV
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• CCLI251 DCCC800
• DXXVI526
• BUT
• CMLXXII972 CDLIX459
• LXXXIV84

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SEEN ENOUGH?WELL, ALSO

• TO REPRESENT LARGER NUMBERS THE ROMANS PUT A LINE
  OVER A ROMAN NUMERAL TO SIGNIFY MULTIPLICATION BY
  1,000
• 5,000!

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Important dates in Roman history to remember

• DCCLIII BCTHE FOUNDING OF ROME
• ___________________________________
• XLIV BCTHE ASSASSINATION OF JULIUS CAESAR ON THE
  IDES OF MARCH
• ___________________________________
• LXXIX ADTHE ERUPTION OF MT VESUVIUS THAT BURIED
  POMPEII AND HERCULANEUM
• __________________________________

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• DCCLIII BCTHE FOUNDING OF ROME
• 753 BC
• XLIV BCTHE ASSASSINATION OF JULIUS CAESAR ON THE
  IDES OF MARCH
• 44 BC
• LXXIX ADTHE ERUPTION OF MT VESUVIUS THAT BURIED
  POMPEII AND HERCULANEUM
• 79 AD

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Memorizing the ROMAN NUMERAL RAPmay help you
remember the seven building blocks
I is one, V is five, Whatchu mean, Latins not
alive? X is ten, L is fitty, Roman numerals look
so pretty! Cs one hundred, Ds five hun Say it
louder, make it fun Now M is a thousand, louder
still Roman numerals on the one dollar
bill MDCCLXXVIFOURTH OF JULY!!!
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WHAT DOES MDCCLXXVI STAND FOR?
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1776

• THE
• YEAR THE U.S.
• ?

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Write down your guesses before the next slide!
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The Flintstones - First went to air in MCMLX and
continued being made until MCMLXVI Monty Python
and the Holy Grail - was released in MCMLXXV
Teenage Mutant Ninja Turtles (TMNT) - first
appeared in MCMLXXXIV Scooby Doo - The first
episode, 'What a Night for a Knight' went to
air in MCMLXIX and is available on Youtube. The
Simpsons - first appeared April XIX, MCMLXXXVII
and has gone on to be the longest running TV
series in history.
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I HOPE THAT RAPS UP THE ROMAN NUMERALS FOR
YOU!!
Check out your activity packet and my teacher
webpage for practice!