6 Questions
What is the value of the letter C in Roman numerals?
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What is the Roman numeral for 40?
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What is the value of the letter I in Roman numerals?
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How is 400 written in Roman numerals?
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What is the Roman numeral for 300?
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What is the Roman numeral for 9?
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Study Notes
Converting Numbers to Roman Numerals
- Roman numerals use a combination of letters to represent numbers
- Each letter has a specific value:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
- To convert a number to Roman numerals, break it down into its place values (hundreds, tens, units) and add the corresponding Roman numeral values
Hundreds
- Hundreds place: represents groups of 100
- In Roman numerals, hundreds are represented by the letter C
- Examples:
- 100 = C
- 200 = CC
- 300 = CCC
- 400 = CD (400 = 100 + 100 + 100 + 100, but in Roman numerals, 400 is written as CD, where D = 500 and C = 100, so CD = 500 - 100 = 400)
Tens
- Tens place: represents groups of 10
- In Roman numerals, tens are represented by the letter X
- Examples:
- 10 = X
- 20 = XX
- 30 = XXX
- 40 = XL (40 = 10 + 10 + 10 + 10, but in Roman numerals, 40 is written as XL, where L = 50 and X = 10, so XL = 50 - 10 = 40)
Units
- Units place: represents individual units
- In Roman numerals, units are represented by the letter I
- Examples:
- 1 = I
- 2 = II
- 3 = III
- 4 = IV (4 = 1 + 1 + 1 + 1, but in Roman numerals, 4 is written as IV, where V = 5 and I = 1, so IV = 5 - 1 = 4)
Converting Numbers to Roman Numerals
- Roman numerals use a combination of letters to represent numbers, with each letter having a specific value: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000)
- To convert a number to Roman numerals, break it down into its place values (hundreds, tens, units) and add the corresponding Roman numeral values
Place Values
- Hundreds place: represents groups of 100, denoted by the letter C
- Tens place: represents groups of 10, denoted by the letter X
- Units place: represents individual units, denoted by the letter I
Converting Numbers
- 100 = C
- 200 = CC
- 300 = CCC
- 400 = CD (subtractive notation: 500 - 100 = 400)
- 10 = X
- 20 = XX
- 30 = XXX
- 40 = XL (subtractive notation: 50 - 10 = 40)
- 1 = I
- 2 = II
- 3 = III
- 4 = IV (subtractive notation: 5 - 1 = 4)
Learn how to convert numbers to Roman numerals by breaking down numbers into place values and adding corresponding Roman numeral values. Understand the values of each Roman numeral letter.
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