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Grade 2 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 2 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. 21 - ______ = 20
  2. ______ + 20 = 30
  3. 29 - ______ = 23
  4. 33 - ______ = 26
  5. 28 - ______ = 9
  6. 23 - ______ = 1
  7. 14 - ______ = 6
  8. 29 - ______ = 25
  9. ______ + 30 = 48
  10. ______ + 33 = 40
  11. 34 - ______ = 32
  12. 29 - ______ = 22
  13. 30 - ______ = 23
  14. ______ + 26 = 48
  15. 38 - ______ = 30
  16. 20 - ______ = 9
  17. ______ + 6 = 26
  18. ______ + 11 = 14
  19. ______ + 24 = 27
  20. ______ + 8 = 29

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Show answer key (for parents and teachers)
  1. 1. 1
  2. 2. 10
  3. 3. 6
  4. 4. 7
  5. 5. 19
  6. 6. 22
  7. 7. 8
  8. 8. 4
  9. 9. 18
  10. 10. 7
  11. 11. 2
  12. 12. 7
  13. 13. 7
  14. 14. 22
  15. 15. 8
  16. 16. 11
  17. 17. 20
  18. 18. 3
  19. 19. 3
  20. 20. 21

How to help with this skill

Second graders connect place value to addition, subtraction and familiar everyday situations. Encourage grouping into tens and ones.

  • 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 2 practice

AdditionSubtractionMultiplicationMixed operationsNumber patterns

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