Shark Learning
Grade 2/Addition

Add Whole Hundreds

Fluency adding whole hundreds to 2- and 3-digit numbers.
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Study Guide

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Easy
1
12 questions
2
12 questions
Medium
1
12 questions
2
12 questions
Hard
1
12 questions
2
12 questions

Practice Questions

  1. 246 + 300 = ?
    Show answer

    546

  2. 175 + 200 = ?
    Show answer

    375

  3. 389 + 400 = ?
    Show answer

    789

  4. 264 + 100 = ?
    Show answer

    364

  5. 512 + 300 = ?
    Show answer

    812

Teacher Resources
Teaching Notes

Anchor on hundreds, keep tens/ones fixed.

Common Mistakes
  • Forgetting place value
  • Adding to wrong digit
  • Ignoring other digits
  • Incorrect mental adjustment
Differentiation
SupportUse base ten blocks or number lines.
ChallengeAdd whole hundreds to 4-digit numbers.
Discussion Questions
  • How does adding hundreds change only the hundreds place?
  • Why is mental math for hundreds useful?
  • Can we use this strategy for tens?
  • How is this similar to skip counting by hundreds?
Learning Path
Skill Cluster

Number Sense & Mental Math

Estimated Time

9 minutes

Skills Practiced
Add whole hundreds