How to count the Roman numers
Answers
Answer:
Roman numerals are the numerical system used in ancient Rome. They use combinations of letters from the Latin alphabet to represent different values. Learning Roman numerals can help you write outlines, understand ancient Roman culture, and become a more cultured human being. Find out how to quickly master those tricky symbols after the jump.
I = 1
V = 5
X = 10
L = 50
C = 100
D = 500
M = 1000
Use a mnemonic to memorize the value order of the symbols. If you have a hard time remembering what goes where, just try this simple one: My Dear Cat Loves Xtra Vitamins Intensely.
I = 1
II = 2
III = 3
IV = 4
V = 5
VI = 6
VII = 7
VIII = 8
IX = 9
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4
Learn all of the digits in the tens place. Here they are:[4]
X = 10
XX = 20
XXX = 30
XL = 40
L = 50
LX = 60
LXX = 70
LXXX = 80
XC = 90
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5
Learn all of the digits in the hundreds place. Here they are:[5]
C = 100
CC = 200
CCC = 300
CD = 400
D = 500
DC = 600
DCC = 700
DCCC = 800
CM = 900
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Know that you can't have more than three of the same symbol in a row. When you place the same symbols together, you can just add their values. Normally the maximum number of the consecutive same symbols is three.
II = 2
XXX = 30
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7
Add smaller symbol values that are placed after large symbol values. Similar to the above rule, just add their values together. Remember the numeral must have the larger symbol value first for this to work. Here's how you do it:
XI = 11
MCL = 1150
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Subtract smaller symbol values that are placed before larger symbol values. In this case, you need to subtract the smaller value from the larger value. Here's how you do it:
IV = 4
CM = 900
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Know how compound numbers are written. There are numerous rules that govern the way Roman numerals are supposed to look. Here are some rules to know:
IV should be used rather than IIII
2987 is written as MMCMLXXXVII because:
The first M gives you 1000
The next M gives you 1000
The next CM gives you 900
The next LXXX gives you 80
The next VII gives you 7
Therefore if you add the amounts together, you will get 2987.