PE4MA Roman Medium

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Questions and Answers

What is the Roman numeral for the number 442?

  • CDXLII (correct)
  • CDLXXII
  • CDLIV
  • CDXLIV

Which of the following options correctly converts the Roman numeral DCCXCIX to a numeral?

  • 799 (correct)
  • 999
  • 899
  • 711

Which numeral corresponds to the Roman numeral CM?

  • 1100
  • 900 (correct)
  • 950
  • 1000

How is the number 576 represented in Roman numerals?

<p>DLXXVI (D)</p> Signup and view all the answers

What is the correct Roman numeral for the number 6?

<p>VI (C)</p> Signup and view all the answers

How is the Roman numeral VIII represented in decimal form?

<p>8 (B)</p> Signup and view all the answers

What is the result when the smaller numeral is placed to the left of a larger numeral in Roman numbers?

<p>Subtraction of values (C)</p> Signup and view all the answers

Which of the following Roman numerals represents the number 9?

<p>IX (C)</p> Signup and view all the answers

If the Roman numeral IV is equal to 4, what does the numeral II equal?

<p>2 (A)</p> Signup and view all the answers

Which Roman numeral cannot be repeated more than three times?

<p>I (A)</p> Signup and view all the answers

What is the correct ascending order of the Roman numbers IV, VI, VIII, IX, and VII?

<p>IV, VI, VII, VIII, IX (D)</p> Signup and view all the answers

What is the Roman numeral for 15?

<p>XV (B)</p> Signup and view all the answers

Which Roman numeral corresponds to the numeral 12?

<p>XII (A)</p> Signup and view all the answers

What is the highest Roman numeral in this list: XII, XIII, XV, XIX, XVI, XVII, XVIII?

<p>XIX (B)</p> Signup and view all the answers

What is the numeral for the Roman number XIV?

<p>14 (C)</p> Signup and view all the answers

Which Roman numeral represents the number 21?

<p>XXI (C)</p> Signup and view all the answers

How would you write the numeral 26 in Roman numerals?

<p>XXVI (D)</p> Signup and view all the answers

Which of these Roman numbers is equivalent to 35?

<p>XXXV (B)</p> Signup and view all the answers

In the sequence XXI, ___, XXIII, ___, XXVI, which number comes after XXI?

<p>XXII (C)</p> Signup and view all the answers

In the sequence LXXX, ___, LXXXII, ___, LXXXIV, what is the missing Roman numeral that comes after LXXX?

<p>LXXXI (B)</p> Signup and view all the answers

What is the value of the Roman numeral D?

<p>500 (C)</p> Signup and view all the answers

If C is written to the left of D, what does this signify?

<p>It is subtracted from D. (B)</p> Signup and view all the answers

Which of the following represents four hundred and forty-four in Roman numerals?

<p>CDXLIV (B)</p> Signup and view all the answers

What is the Roman numeral representation for the number 215?

<p>CCXV (B)</p> Signup and view all the answers

What does the Roman numeral CDXLVI represent in words?

<p>Four hundred and forty-six (B)</p> Signup and view all the answers

For the Roman numeral CCCXXX, how would it be written in words?

<p>Three hundred and thirty (C)</p> Signup and view all the answers

What is the Roman numeral for the number forty-three?

<p>XLIII (C)</p> Signup and view all the answers

Which of the following Roman numerals correctly represents the number thirty-six?

<p>XXXVI (C)</p> Signup and view all the answers

What is the correct word representation for the Roman numeral LXXXIX?

<p>eighty-nine (C)</p> Signup and view all the answers

Which Roman numeral corresponds to the number fifty-five?

<p>LV (A)</p> Signup and view all the answers

How is the number seventy-two represented in Roman numerals?

<p>LXXII (B)</p> Signup and view all the answers

What is the word representation for the Roman numeral XC?

<p>ninety (B)</p> Signup and view all the answers

Which of the following sequences correctly orders the Roman numerals from smallest to largest?

<p>I, V, X, L, LXV, LXXV, C (D)</p> Signup and view all the answers

Which numeral represents the value ninety-nine in Roman numerals?

<p>XCIX (A)</p> Signup and view all the answers

What is the correct representation of the number fifty-eight in Roman numerals?

<p>LVIII (B)</p> Signup and view all the answers

Which of the following is NOT a valid Roman numeral?

<p>LXC (A)</p> Signup and view all the answers

Flashcards

Roman Numerals

A system of writing numbers using letters of the alphabet, commonly used in contexts like book introductions and clock faces.

What does 'I' represent in Roman numerals?

A Roman numeral representing the number 1.

What does 'V' represent in Roman numerals?

A Roman numeral representing the number 5.

What does 'X' represent in Roman numerals?

A Roman numeral representing the number 10.

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Addition in Roman Numerals

In Roman numerals, when a smaller numeral is placed to the right of a larger numeral, their values are added. For example, VI = 5 + 1 = 6.

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Subtraction in Roman Numerals

In Roman numerals, when a smaller numeral is placed to the left of a larger numeral, the smaller value is subtracted from the larger value. For example, IV = 5 - 1 = 4.

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Repeating 'I' in Roman Numerals

The Roman numeral 'I' can be repeated up to three times to represent numbers from 1 to 3. For example, II = 2 and III = 3.

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Roman Numeral for One

The Roman numeral for 'one' is 'I'.

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Roman Numeral for Five

The Roman numeral for 'five' is 'V'.

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Roman Numeral for Ten

The Roman numeral for 'ten' is 'X'.

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Roman Numeral for Four

The Roman numeral for 'four' is 'IV'.

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Roman Numeral for Nine

The Roman numeral for 'nine' is 'IX'.

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Roman Numeral for Fifty

The Roman numeral for 'fifty' is 'L'.

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Roman Numeral for Hundred

The Roman numeral for 'hundred' is 'C'.

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Subtractive Rule

In Roman numerals, a smaller numeral placed to the left of a larger numeral indicates subtraction.

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What is LXV in words?

The Roman numeral 'L' represents 50, so LXV is 50 + 10 + 5 = 65.

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Roman Numeral 'C' before 'D'

The numeral 'C' represents 100. When placed to the left of 'D' (500) it subtracts.

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What is XLIX in words?

The Roman numeral 'X' represents 10, and when placed before 'L', it is subtracted, so XLIX is 50 - 10 + 9 = 49.

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Roman Numeral 'C' after 'D'

The numeral 'C' represents 100. When placed to the right of 'D' (500) it adds, up to three times.

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What is XC in words?

The Roman numeral 'C' represents 100, and when placed after 'X', it is added, so XC is 100 - 10 = 90.

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How do you write 60 in Roman numerals?

The Roman numeral 'X' represents 10, and when placed after 'L', it is added, so LX is 50 + 10 = 60.

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Roman Numeral 'LX'

The Roman numeral 'L' represents 50, and 'X' represents 10. 'LX' indicates 50 + 10 = 60.

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How do you write 16 in Roman numerals?

The Roman numeral 'V' represents 5 and 'I' represents 1. So, when written after 'X', they are added. Therefore, XVI is 10 + 5 + 1 = 16.

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Roman Numeral 'CDX'

The Roman numeral 'C' represents 100, 'D' represents 500, and 'X' represents 10. 'CDX' indicates 500 - 100 + 10 = 410.

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Roman Numeral 'DCC'

The Roman numeral 'D' represents 500. 'DCC' indicates 500 + 100 + 100 = 700.

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How do you write 40 in Roman numerals?

The Roman numeral 'X' represents 10 and 'L' represents 50. When 'X' is placed before 'L', it is subtracted, so XL is 50 - 10 = 40.

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Roman Numeral 'DCCC'

The Roman numeral 'D' represents 500 and 'C' represents 100. 'DCCC' indicates 500 + 100 + 100 + 100 = 800.

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How do you write 90 in Roman numerals?

The Roman numeral 'X' represents 10, placed before 'C' it is subtracted, so XC represents 100 - 10 = 90.

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Roman Numeral 'LV'

The Roman numeral 'L' represents 50, and 'V' represents 5, but 'LV' represents 55.

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What is the Roman numeral for forty-two?

42 is represented by XLII: XL (40) + II (2).

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What is the Roman numeral for thirty-nine?

39 is represented by XXXIX: XXX (30) + IX (9).

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Roman Numeral 'LXV'

The Roman numeral 'L' represents 50, 'X' represents 10, and 'V' represents 5, but 'LXV' represents 65.

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Roman Numeral 'XXX'

The Roman numeral 'X' represents 10. 'XXX' indicates 10 + 10 + 10 = 30.

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What is the Roman numeral for 37?

Thirty-seven is represented by XXXVII: XXX (30) + VII (7).

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Study Notes

Roman Numerals

  • Roman numerals are used to represent numbers.
  • They use combinations of letters from the alphabet (I, V, X, L, C, D, M)
  • Numbers from 1 to 1000 can be expressed in Roman numerals.
  • Numbers with a smaller value written to the right of a larger value are added.
  • Numbers with a smaller value written to the left of a larger value are subtracted.
  • The letter "I" represents 1.
  • The letter "V" represents 5.
  • The letter "X" represents 10.
  • The letter "L" represents 50.
  • The letter "C" represents 100.
  • The letter "D" represents 500.
  • The letter "M" represents 1000.

Rules for Writing Roman Numerals

  • A smaller numeral to the right of a larger numeral is added.
  • A smaller numeral to the left of a larger numeral is subtracted.
  • A numeral cannot be repeated more than three times.
  • The numerals I, X, and C can be subtracted from the next higher numerals. They cannot be subtracted from numerals higher than twice their value. V, L, and D can never be subtracted.

Examples

  • III = 3
  • IX = 9
  • IV = 4
  • LX = 60
  • XC = 90
  • CD= 400
  • CM = 900
  • MD=1500

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