Shark Learning
First/Subtraction

Subtract 1-Digit from 2-Digit Numbers

Practice subtracting 1-digit numbers from 2-digit numbers. Students build mental math skills and learn to subtract across place values.
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Study Guide

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Subtract 1-Digit from 2-Digit Numbers preview

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Practice Questions

  1. 52 - 7 = ?
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    45

  2. 43 - 5 = ?
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    38

  3. 68 - 9 = ?
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    59

  4. 71 - 4 = ?
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    67

  5. 85 - 8 = ?
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    77

Teacher Resources
Teaching Notes

Focus on place value understanding and mental math strategies, especially regrouping. Encourage students to explain their thinking process.

Vocabulary
Regroup: Borrowing from a higher place value.
Tens Place: The position representing multiples of ten.
Common Mistakes
  • Subtracting the smaller digit from the larger digit regardless of place value.
  • Errors in regrouping (borrowing) from the tens place.
  • Incorrectly subtracting when a zero is in the ones place of the two-digit number.
Differentiation
SupportUse base ten blocks or a number line for visual support.
ChallengeChallenge with mental math or create word problems.
Discussion Questions
  • How does understanding place value help with subtraction?
  • When might you need to 'regroup' or 'borrow' in subtraction?
  • Can you think of a real-life situation where you would subtract a 1-digit number from a 2-digit number?
  • What are different strategies you can use to solve 32 - 5?
Extension Activities
  • Subtract 2-digit from 2-digit.
  • Use larger 1-digit numbers.
  • Word problems with subtraction.
Parent Tip

Use objects like blocks to show taking away one from a group of ten.

Learning Path
Skill Cluster

Number Sense & Operations

Estimated Time

15 minutes

Skills Practiced
Subtraction with regroupingOne digit subtractionTwo digit subtraction