Solve 62 - 38 using the regrouping method. Show your work by writing out the new tens and ones values after regrouping.

62 - 38 = (50 + 12) - (30 + 8) = 24

Write down a subtraction problem (using two 2-digit numbers) that requires regrouping to solve. Explain why regrouping is necessary in the problem you created.

Example: 41 - 23. Regrouping is needed because you cannot subtract 3 from 1 directly.

Explain in your own words why we sometimes need to 'borrow' or regroup when subtracting two-digit numbers.

We need to regroup when the digit in the ones place of the number we are subtracting from is smaller than the digit in the ones place of the number we are subtracting. This means we don't have enough ones to subtract, so we need to take a ten from the tens place and add it to the ones place.

Two-Digit Subtraction with Renaming

2nd GradeMath30 min

Learning Objective

I can subtract two-digit numbers with renaming (borrowing).

Lesson Flow

Watch Video

6 min

Subtracting with regrouping (borrowing) | Early Math | Khan Academy

Khan Academy

Guided Notes

6 min

Key concepts students will learn:

•
When subtracting 25 from 83, you can't subtract 5 ones from 3 ones, so you need to regroup.
•
Regrouping means taking 10 from the tens place and adding it to the ones place to make a larger number to subtract from.
•
After regrouping, 83 becomes 7 tens and 13 ones, allowing you to subtract 25 and get the answer 58.

Practice

10 min

3 questions • Short answer

Exit Ticket

5 min

“Solve 62 - 38 showing all steps including regrouping.”

Teacher Guide

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Answer keys for all questions
Differentiation strategies
Extension activities
Printable student handouts

Two-Digit Subtraction with Renaming

Learning Objective

Lesson Flow

Watch Video

Guided Notes

Practice

Exit Ticket

Teacher Guide

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