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Grade 3 Missing numbers — Gentle practice

Missing-number equations show the relationship between operations. Start with accessible examples. Give extra time for thinking and use a visual model whenever helpful.

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Grade 3 Missing numbers — Gentle practice

Name: ________________________   Date: ______________

20 questions

Directions: Name the unknown quantity and read both sides of the equation. Write your answer for each problem.

  1. ______ + 208 = 268
  2. 82 - ______ = 48
  3. ______ + 189 = 298
  4. ______ + 32 = 117
  5. 486 - ______ = 318
  6. ______ + 12 = 89
  7. ______ + 22 = 197
  8. ______ + 67 = 178
  9. 574 - ______ = 395
  10. 297 - ______ = 295
  11. 241 - ______ = 181
  12. ______ + 117 = 319
  13. 159 - ______ = 57
  14. 131 - ______ = 27
  15. ______ + 323 = 437
  16. 245 - ______ = 195
  17. ______ + 59 = 150
  18. ______ + 191 = 192
  19. 190 - ______ = 106
  20. 457 - ______ = 279

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Show answer key (for parents and teachers)
  1. 1. 60
  2. 2. 34
  3. 3. 109
  4. 4. 85
  5. 5. 168
  6. 6. 77
  7. 7. 175
  8. 8. 111
  9. 9. 179
  10. 10. 2
  11. 11. 60
  12. 12. 202
  13. 13. 102
  14. 14. 104
  15. 15. 114
  16. 16. 50
  17. 17. 91
  18. 18. 1
  19. 19. 84
  20. 20. 178

How to help with this skill

Third graders begin to use multiplication, division, fractions and measurement regularly. Discuss which operation fits the question.

  • Name the unknown quantity and read both sides of the equation.
  • Use the inverse operation to find it.
  • Substitute your result back into the original equation.

Try this: Try a balance-scale drawing to make the equality visible.

Choose a different level

Gentle practiceEveryday practiceStretch your thinking

More Grade 3 practice

AdditionSubtractionMultiplicationDivisionMixed operations

Supplementary math practice, not a full curriculum. Review answers with your learner.