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Second/Roman Numerals

Writing Roman Numerals (1-1000)

Write Roman Numerals up to 1,000. Practice with D and M.
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Study Guide

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Practice Questions

  1. 400 = ?
    Show answer

    CD

  2. 500 = ?
    Show answer

    D

  3. 900 = ?
    Show answer

    CM

  4. 1000 = ?
    Show answer

    M

  5. 550 = ?
    Show answer

    DL

Teacher Resources
Teaching Notes

Practice expanding numbers before converting. 999 = 900 + 90 + 9 = CM + XC + IX.

Vocabulary
Convert: Change from one form to another.
Represent: To stand for or symbolize.
Common Mistakes
  • Incorrect use of subtractive rule
  • Confusing D (500) and C (100)
  • Incorrect order of symbols
  • Repeating symbols too many times
Differentiation
SupportUse visual aids; start with numbers under 100.
ChallengeChallenge with larger numbers or Roman numeral arithmetic.
Discussion Questions
  • Where do we still see Roman numerals?
  • Why did cultures develop different number systems?
  • What are the rules for combining symbols?
  • How are Roman numerals similar/different from base-10?
Extension Activities
  • Write large numbers in Roman numerals.
  • Design a Roman numeral logo.
  • Compare numeral systems.
Parent Tip

Ask your child to write special dates (birthdays, holidays) in Roman numerals.

Learning Path
Skill Cluster

Number Systems

Estimated Time

20 minutes

Skills Practiced
Mixed operations roman