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Grade 3 Expanded Form Worksheet (Set E)

Free printable Grade 3 expanded form worksheet with an answer key, writing numbers in expanded and standard form. Print as a PDF for the classroom or home.

📘 How to teach expanded form — teaching guide with a worked explanation and diagram.

✓ Answer key checked by math, never wrong
Grade 3 · Math worksheet
Name
Date
Math

Expanded Form

Write each number in expanded form, or as a standard number.

  1. 1.
    Write 377 in expanded form:
  2. 2.
    Write in standard form: 600 + 80
  3. 3.
    Write 940 in expanded form:
  4. 4.
    Write in standard form: 100 + 80 + 4
  5. 5.
    Write 831 in expanded form:
  6. 6.
    Write in standard form: 500 + 30 + 3
  7. 7.
    Write 958 in expanded form:
  8. 8.
    Write in standard form: 100 + 10 + 7
  9. 9.
    Write 668 in expanded form:
  10. 10.
    Write in standard form: 500 + 50 + 6
  11. 11.
    Write 129 in expanded form:
  12. 12.
    Write in standard form: 400 + 60 + 6
  13. 13.
    Write 661 in expanded form:
  14. 14.
    Write in standard form: 800 + 30 + 6
  15. 15.
    Write 557 in expanded form:
  16. 16.
    Write in standard form: 200 + 30 + 3
  17. 17.
    Write 687 in expanded form:
  18. 18.
    Write in standard form: 200 + 10 + 8
  19. 19.
    Write 262 in expanded form:
  20. 20.
    Write in standard form: 200 + 30 + 2
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