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Fifth/Addition

Vertical Addition: Four 2-Digit Numbers with Regrouping

Vertical addition of four 2-digit numbers (multiple regroupings).
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Study Guide

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Vertical Addition: Four 2-Digit Numbers with Regrouping preview

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Practice Questions

  1. 69 + 97 + 30 + 21 = ?
    Show answer

    217

  2. 25 + 47 + 38 + 16 = ?
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    126

  3. 52 + 34 + 29 + 17 = ?
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    132

  4. 41 + 58 + 27 + 36 = ?
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    162

  5. 33 + 48 + 56 + 25 = ?
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    162

Quick Tip
Track multiple carries carefully; write each carry above tens.
Teacher Resources
Teaching Notes

Focus on place value alignment and careful regrouping across multiple columns. Encourage students to check their work, especially when adding more than two numbers.

Vocabulary
Column Addition: Adding numbers vertically, aligning digits by place value.
Regrouping: Exchanging tens for ones or hundreds for tens.
Common Mistakes
  • Forgetting to regroup a carried number.
  • Misaligning digits in columns.
  • Errors in basic addition facts.
  • Adding only two numbers instead of four.
Differentiation
SupportProvide a place value chart or grid paper to help with alignment. Start with adding three 2-digit numbers first. Use manipulatives (base-ten blocks) to model regrouping.
ChallengeChallenge students to add five or six 2-digit numbers. Introduce word problems requiring multi-number addition. Explore strategies for estimating the sum first.
Discussion Questions
  • Why is it important to line up the numbers by place value?
  • What happens when the sum of a column is 10 or more?
  • How can you check your answer when adding many numbers?
Extension Activities
  • Add five numbers.
  • Use a number line for addition.
  • Create word problems.
Parent Tip

Use coins to represent tens and ones for addition practice.

Learning Path
Skill Cluster

Multi-Digit Addition

Estimated Time

15 minutes

Skills Practiced
Adding four 2 digit numbersAddition with regroupingMulti digit addition