Two-Digit Subtraction with Regrouping
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Objective
I can subtract two-digit numbers with regrouping.
Part 1 of 4
Warm-up video
Khan Academy · 5:26Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
When subtracting two-digit numbers, you first look at the ones place, and if the top digit is smaller than the bottom digit, you need to regroup.
- 2
Regrouping involves taking one ten from the tens place and adding ten ones to the ones place.
- 3
For example, 83 can be thought of as seven tens and thirteen ones after regrouping, which allows you to subtract in the ones place.
Part 3 of 4
Practice
10 questions
Subtract 27 from 64. Show your work.
Explain the first step of regrouping when you are trying to calculate 51 - 36.
Part 4 of 4
Exit ticket
Quick comprehension check
“Subtract 37 from 74. Show all steps, including how you regroup.”
Sample answer included in the free materials
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