Shark Learning
Fifth/Addition

Missing Addend (General 2-Digit)

General missing addend with 2-digit numbers; totals may exceed 100.
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Study Guide

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Missing Addend (General 2-Digit) preview

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Practice Questions

  1. 46 + ? = 135
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    89

  2. 57 + ? = 125
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    68

  3. 38 + ? = 85
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    47

  4. 64 + ? = 93
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    29

  5. 58 + ? = 95
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    37

Teacher Resources
Teaching Notes

Encourage mental subtraction and check by addition.

Common Mistakes
  • Incorrect operation chosen
  • Errors in regrouping
  • Misaligning place values
  • Basic subtraction fact errors
Differentiation
SupportUse manipulatives or number lines for visualization.
ChallengeCreate multi-step missing addend problems.
Discussion Questions
  • How does subtraction help find a missing addend?
  • What strategies work best for 2-digit missing addends?
  • When might you use this skill in daily life?
  • How can you check if your answer is correct?
Learning Path
Skill Cluster

Number Sense & Operations

Estimated Time

12 minutes

Skills Practiced
Missing addend general