Shark Learning
Grade 4/Subtraction

Subtraction in Columns: Across Two Zeros

Column subtraction requiring borrow through two consecutive zeros.
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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. 6,900 − 5,925 = ?
    Show answer

    975

  2. 83,000 − 62,487 = ?
    Show answer

    20,513

  3. 40,200 − 12,345 = ?
    Show answer

    27,855

  4. 70,500 − 49,678 = ?
    Show answer

    20,822

  5. 15,800 − 7,906 = ?
    Show answer

    7,894

Teacher Resources
Teaching Notes

Annotate each borrow, especially through zero columns.

Vocabulary
Borrow: Regrouping from a higher place value.
Consecutive Zeros: Zeros next to each other.
Common Mistakes
  • skipping a column in the chain
  • Forgetting to adjust borrowed-from digits.
  • Incorrectly borrowing across zeros.
  • Subtracting smaller from larger digit.
  • Misaligning place values.
Differentiation
SupportUse base ten blocks to model borrowing across zeros.
ChallengeIntroduce larger numbers or estimate answers first.
Discussion Questions
  • Why is borrowing across zeros tricky?
  • What happens to the value when you borrow?
  • Can you check your answer using addition?
  • How would you explain borrowing to a friend?
Extension Activities
  • Subtract larger numbers.
  • Create word problems.
  • Use a calculator to check.
Parent Tip

Have your child explain the 'chain reaction' of borrowing across zeros.

Learning Path
Skill Cluster

Number Operations

Estimated Time

14 minutes

Skills Practiced
Borrow across zeros