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Third/Subtraction

2-Digit Subtraction with Regrouping (1-Digit)

Timed practice for subtracting a single digit from two-digit numbers to build speed and accuracy.
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2-Digit Subtraction with Regrouping (1-Digit) preview

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Prerequisites
Subtract from Multiples of Ten9 WS
20 - 2 = ____
What to Do Next
Subtract 1-Digit from 3-Digit Numbers with Regrouping9 WS
217 - 9 = ____

Practice Questions

  1. 33 - 9 = ?
    Show answer

    24

  2. 45 - 8 = ?
    Show answer

    37

  3. 62 - 7 = ?
    Show answer

    55

  4. 54 - 6 = ?
    Show answer

    48

  5. 81 - 3 = ?
    Show answer

    78

Teacher Resources
Lesson Plan

Subtracting Single Digits

Standards
2.NBT.B.5
Printable Aids
Hundreds ChartBase Ten Blocks Guide
Teaching Notes

This collection focuses on introducing and practicing subtraction with regrouping (borrowing) from a two-digit number. Emphasize the concept of exchanging one 'ten' for ten 'ones' when the ones digit in the top number is smaller than the bottom. Using manipulatives like base-ten blocks can greatly aid understanding.

Vocabulary
Regrouping: Exchanging a ten for ten ones.
Borrowing: Taking from a higher place value.
Common Mistakes
  • Forgetting to regroup/borrow from the tens place.
  • Subtracting the smaller digit from the larger digit regardless of its position (e.g., 2 - 7 becomes 5 instead of regrouping).
  • Incorrectly subtracting from the tens column after regrouping.
Differentiation
SupportProvide problems with visual aids like place value charts or base-ten block drawings. Work through problems step-by-step, verbalizing the regrouping process. Start with problems where only the ones column requires regrouping.
ChallengeEncourage mental math strategies for smaller numbers. Challenge them to explain their reasoning or create their own word problems that require this skill.
Discussion Questions
  • Why do we need to 'borrow' or 'regroup' when subtracting some numbers?
  • How does understanding place value help us with regrouping?
  • Can you think of a real-life situation where you might need to subtract a small number from a larger two-digit number?
Extension Activities
  • Use base-ten blocks.
  • Draw the regrouping.
  • Number line jumps.
Parent Tip

Use play money (dimes and pennies) to model regrouping for subtraction.

Learning Path
Skill Cluster

Subtraction with Regrouping

Grade Level

2-3

Skills Practiced
2 digit subtraction regroupingRegrouping tensPlace value manipulation