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Second/Roman Numerals

Reading Roman Numerals (1-399)

Practice reading Roman Numerals up to 399. Includes C (100).
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Practice Questions

  1. LX = ?
    Show answer

    60

  2. LXXV = ?
    Show answer

    75

  3. XC = ?
    Show answer

    90

  4. XCIX = ?
    Show answer

    99

  5. CV = ?
    Show answer

    105

Teacher Resources
Teaching Notes

Focus on the "subtractive notation" like IV, IX, XL, XC. This is usually the hardest part.

Vocabulary
Roman Numeral: Number system using letters like I, V, X, L, C.
Decode: Figure out the meaning or value.
Common Mistakes
  • Incorrect subtractive rule application.
  • Confusing 'C' with other symbols.
  • Not combining smaller values correctly.
  • Misinterpreting tens and ones groups.
Differentiation
SupportUse visual aids and manipulatives to represent values. Focus on I, V, X first.
ChallengeChallenge with higher values (D, M) or converting standard to Roman numerals.
Discussion Questions
  • How are Roman numerals different from our number system?
  • When might you still encounter Roman numerals today?
  • Why is the order of symbols important in Roman numerals?
  • What patterns do you notice in how values are formed?
Extension Activities
  • Write dates in Roman numerals.
  • Compare Roman and Arabic numbers.
  • Create a Roman numeral chart.
Parent Tip

Ask your child to read the year on a building using Roman numerals.

Learning Path
Skill Cluster

Number Sense & Systems

Estimated Time

20 minutes

Skills Practiced
Convert arabic to romanSubtractive notation