Shark Learning
Grade 3/Addition

3-Digit Column Addition with Regrouping

Add pairs of 3-digit numbers (may require carrying).
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Easy
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12 questions
2
12 questions
Medium
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12 questions
2
12 questions
Hard
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12 questions
2
12 questions

Practice Questions

  1. 397 + 984 = ?
    Show answer

    1,381

  2. 456 + 789 = ?
    Show answer

    1,245

  3. 608 + 457 = ?
    Show answer

    1,065

  4. 289 + 673 = ?
    Show answer

    962

  5. 745 + 286 = ?
    Show answer

    1,031

Teacher Resources
Lesson Plan

Adding 3-Digit Numbers

Standards
3.NBT.A.2
Printable Aids
Place Value ChartGrid Paper
Teaching Notes

Emphasize place value and the regrouping (carrying) process, starting addition from the ones column. Use base-ten blocks to model regrouping.

Vocabulary
Regroup: Exchange 10 ones for 1 ten, or 10 tens for 1 hundred.
Column: Numbers stacked vertically.
Common Mistakes
  • Forgetting to carry a regrouped ten or hundred.
  • Adding columns from left to right instead of right to left.
  • Incorrectly adding basic facts within a column.
Differentiation
SupportProvide manipulatives (base-ten blocks), use partial sums strategy, or provide partially completed problems.
ChallengeIntroduce problems with three 3-digit addends, explore estimation strategies, or present addition in word problems.
Discussion Questions
  • Why is it important to start adding from the ones column?
  • What does 'carrying over' or 'regrouping' mean in addition?
  • How is adding three-digit numbers similar to adding two-digit numbers?
Extension Activities
  • Add three 2-digit numbers.
  • Use play money to model regrouping.
  • Create your own problems.
Parent Tip

Ask your child to explain how they regrouped numbers.

Learning Path
Skill Cluster

Number Sense & Operations

Grade Level

2-3

Skills Practiced
Addition with regroupingPlace valueMental math