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Roman numerals

Read and write Roman numerals from 1 to 3,999.

Practice + answer key · 2 pages

Worksheet settings12 questions · 2 columns · A4
Value range

Bounds refer to the ordinary-number value in either conversion direction.

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Roman numeralsRoman numerals. Practice. Write 18 in Roman numerals. Write VIII as an ordinary number. Write 65 in Roman numerals. Write XXXVI as an ordinary number. Write 50 in Roman numerals. Write XCI as an ordinary number. Write 71 in Roman numerals. Write LXXXVI as an ordinary number. Write 38 in Roman numerals. Write LXXXII as an ordinary number. Write 39 in Roman numerals. Write III as an ordinary number.Name __________________________Date _______________Roman numeralsConvert each value to the requested numeral system.Worked exampleWrite 944 in Roman numerals. → CMXLIV944 = 900 + 40 + 4.1.Write 18 in Roman numerals.2.Write VIII as an ordinary number.3.Write 65 in Roman numerals.4.Write XXXVI as an ordinarynumber.5.Write 50 in Roman numerals.6.Write XCI as an ordinary number.7.Write 71 in Roman numerals.8.Write LXXXVI as an ordinarynumber.9.Write 38 in Roman numerals.10.Write LXXXII as an ordinarynumber.11.Write 39 in Roman numerals.12.Write III as an ordinary number.MathSprig · mathsprig.site · support@mathsprig.sitePage 1 of 1mathsprig-1 · mathsprig-v1 · e45d3a10
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Practice + answer key · 2 pages

Number sense

What you’ll practice

Read and write Roman numerals from 1 to 3999 with standard subtractive pairs.

Learn how groups such as IV, XL and CM fit together. The questions go both ways, so you can practice reading Roman numerals as well as writing them.

How this skill works

Roman symbols are grouped from larger values to smaller values. Common symbols are I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1000.

The subtractive pairs IV, IX, XL, XC, CD and CM represent 4, 9, 40, 90, 400 and 900. Read each pair as one value group.

Worked example

Write 944 in Roman numerals.
  1. 944 = 900 + 40 + 4.
  2. The groups are CM, XL and IV.
  3. Combine them in descending value order: CMXLIV.

Answer: CMXLIV

Teaching notes

  • Separate subtractive pairs before adding their values.
  • Use IV for 4 and IX for 9 in this notation.
Practice questions
  1. Write 18 in Roman numerals.
  2. Write VIII as an ordinary number.
  3. Write 65 in Roman numerals.
  4. Write XXXVI as an ordinary number.
  5. Write 50 in Roman numerals.
  6. Write XCI as an ordinary number.
  7. Write 71 in Roman numerals.
  8. Write LXXXVI as an ordinary number.
  9. Write 38 in Roman numerals.
  10. Write LXXXII as an ordinary number.
  11. Write 39 in Roman numerals.
  12. Write III as an ordinary number.
Answers and steps
  1. XVIII
    1. Use the value groups X = 10, V = 5, I = 1, I = 1, I = 1.
    2. Putting the groups together gives XVIII = 18.
  2. 8
    1. Use the value groups V = 5, I = 1, I = 1, I = 1.
    2. Putting the groups together gives VIII = 8.
  3. LXV
    1. Use the value groups L = 50, X = 10, V = 5.
    2. Putting the groups together gives LXV = 65.
  4. 36
    1. Use the value groups X = 10, X = 10, X = 10, V = 5, I = 1.
    2. Putting the groups together gives XXXVI = 36.
  5. L
    1. Use the value groups L = 50.
    2. Putting the groups together gives L = 50.
  6. 91
    1. Use the value groups XC = 90, I = 1.
    2. Putting the groups together gives XCI = 91.
  7. LXXI
    1. Use the value groups L = 50, X = 10, X = 10, I = 1.
    2. Putting the groups together gives LXXI = 71.
  8. 86
    1. Use the value groups L = 50, X = 10, X = 10, X = 10, V = 5, I = 1.
    2. Putting the groups together gives LXXXVI = 86.
  9. XXXVIII
    1. Use the value groups X = 10, X = 10, X = 10, V = 5, I = 1, I = 1, I = 1.
    2. Putting the groups together gives XXXVIII = 38.
  10. 82
    1. Use the value groups L = 50, X = 10, X = 10, X = 10, I = 1, I = 1.
    2. Putting the groups together gives LXXXII = 82.
  11. XXXIX
    1. Use the value groups X = 10, X = 10, X = 10, IX = 9.
    2. Putting the groups together gives XXXIX = 39.
  12. 3
    1. Use the value groups I = 1, I = 1, I = 1.
    2. Putting the groups together gives III = 3.