Shark Learning
Fifth/Addition

Missing Addends with Whole Hundreds

Missing addend when the step is a whole hundred.
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Study Guide

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Practice Questions

  1. 246 + ? = 546
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    300

  2. 175 + ? = 375
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    200

  3. 389 + ? = 789
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    400

  4. 264 + ? = 364
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    100

  5. 512 + ? = 812
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    300

Teacher Resources
Teaching Notes

Relate to vertical subtraction as verification.

Common Mistakes
  • Incorrect operation applied
  • Place value errors
  • Not checking answer
  • Forgetting inverse relationship
Differentiation
SupportUse number lines or manipulatives.
ChallengeSolve with missing subtrahend/minuend.
Discussion Questions
  • How does knowing 4+3=7 help with 400+300=700?
  • What strategy helps find missing addends?
  • How can you check your answer?
  • When might you use this skill in daily life?
Learning Path
Skill Cluster

Number Sense & Operations

Estimated Time

9 minutes

Skills Practiced
Missing addend hundreds