I The easiest way to note down a number is to make that many marks - little I's. Thus I means 1, II means 2, III means 3. However, four strokes seemed like too many....
V So the Romans moved on to the symbol for 5 - V. Placing I in front of the V — or placing any smaller number in front of any larger number — indicates subtraction. So IV means 4. After V comes a series of additions - VI means 6, VII means 7, VIII means 8.
X X means 10. But wait — what about 9? Same deal. IX means to subtract I from X, leaving 9. Numbers in the teens, twenties and thirties follow the same form as the first set, only with X's indicating the number of tens. So XXXI is 31, and XXIV is 24.
L L means 50. Based on what you've learned, I bet you can figure out what 40 is. If you guessed XL, you're right = 10 subtracted from 50. And thus 60, 70, and 80 are LX, LXX and LXXX.
C C stands for centum, the Latin word for 100. A centurion led 100 men. We still use this in words like "century" and "cent." The subtraction rule means 90 is written as XC. Like the X's and L's, the C's are tacked on to the beginning of numbers to indicate how many hundreds there are: CCCLXIX is 369.
D D stands for 500. As you can probably guess by this time, CD means 400. So CDXLVIII is 448. (See why we switched systems?)
M M is 1,000. You see a lot of Ms because Roman numerals are used a lot to indicate dates. For instance, this page was written in the year of Nova Roma's founding, 1998 CE (Common Era; Christians use AD for Anno Domini, "year of our Lord"). That year is written as MCMXCVIII. But wait! Nova Roma counts years from the founding of Rome, ab urbe condita. By that reckoning Nova Roma was founded in 2751 a.u.c. or MMDCCLI.
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V
Larger numbers were indicated by putting a horizontal line over them, which meant to multiply the number by 1,000. Hence the V at left has a line over the top, which means 5,000. This usage is no longer current, because the largest numbers usually expressed in the Roman system are dates, as discussed above.
2006-06-27 13:57:36
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answer #1
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answered by qt2sh 3
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Roman numerals work such that when one of a smaller value is placed before one of a larger value it really means to subtract. Like 4 = IV (or V - I, 5-1), and XIV is 10+5-1, while XVI is 10+5+1. Just takes some getting used to.
2006-06-27 13:57:04
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answer #2
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answered by Charles T. Spencer III 2
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The ORDER of the numerals is what makes the difference
XVI = 10 + (5 + 1) = 16
XIV = 10 + (5 - 1) = 14
So anytime there is a 'smaller' numeral BEFORE a larger one, it is subtraction. This is because in roman numerals, you only can have the same numeral 3 times in a row- so there is no other way to represent 4 (IV vs IIII) or 9 (IX vs VIIII) or the like.
2006-06-27 14:00:35
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answer #3
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answered by tahneste 2
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No, Roman Numerals involve division and subtraction. A simple rule is, if a smaller numeral comes before a bigger one, you subtract it from the next one and add it to the total. ex: X = 10, V = 5, I = 1 XIV = 10 + (5-1) = 14
the 16 is just plain and simple math
2006-06-27 13:57:07
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answer #4
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answered by kyle r 2
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When the I is in frint of V it means to subtract 1 from 5
2006-06-27 13:57:04
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answer #5
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answered by Flower Girl 6
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no because when a I is written before a higher ordinance that means to subtract it from the next digit, when it is after it means to add it. that way you dont get like XIIII
2006-06-27 13:56:29
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answer #6
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answered by dzr0001 5
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youve got it all wrong. let me give you an example
I=1
X=10
IX= 9 because it is "one before 10"
2006-06-27 13:56:19
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answer #7
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answered by Anonymous
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it's the way they made it , wait until you have to read the thousand numbers , you probably get confused after that .
2006-06-27 14:01:13
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answer #8
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answered by Anonymous
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