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Third/Subtraction

Subtract Whole Tens from 3-Digit Numbers Without Regrouping

Practice subtracting whole tens from 3-digit numbers without regrouping.
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Practice Questions

  1. 362 - 40 = ?
    Show answer

    322

  2. 473 - 20 = ?
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    453

  3. 584 - 30 = ?
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    554

  4. 695 - 50 = ?
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    645

  5. 806 - 60 = ?
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    746

Quick Tip
Subtracting whole tens without regrouping helps build confidence in subtraction.
Teacher Resources
Teaching Notes

Focus on place value to help students easily subtract whole tens from 3-digit numbers without regrouping. Emphasize that only the tens digit changes, while hundreds and ones remain the same.

Vocabulary
Tens place: The position of the tens digit.
Hundreds place: The position of the hundreds digit.
Common Mistakes
  • Subtracting from the wrong place value (e.g., ones instead of tens)
  • Incorrectly changing the hundreds or ones digit
Differentiation
SupportUse base-10 blocks or a hundreds chart to visualize the subtraction. Provide a place value chart to align numbers.
ChallengeChallenge students with mental math strategies or introduce subtracting multiples of 10 (e.g., 20, 30) from 3-digit numbers without regrouping.
Discussion Questions
  • What happens to the ones digit when we subtract a whole ten?
  • How does understanding place value help us subtract these numbers quickly?
  • Can you give an example of when we might need to use this skill in real life?
Extension Activities
  • Subtract tens on a number line.
  • Word problems with tens.
Parent Tip

Ask your child to count backward by tens from a 3-digit number.

Learning Path
Skill Cluster

Number Sense & Operations - Place Value

Estimated Time

15 minutes

Skills Practiced
Subtracting tens from 3 digitPlace value subtraction