Multiplying Fluently by Subtracting from Groups of 10
Interactive Video
•
Mathematics
•
1st - 6th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
This lesson teaches how to multiply fluently by subtracting from groups of 10. It begins with a review of 10s quick facts and the commutative property of multiplication. The lesson then demonstrates how to multiply numbers like 4 * 9, 6 * 9, and 9 * 8 using a strategy that involves subtracting from groups of 10. This approach simplifies multiplication by leveraging known facts and reducing the need for direct calculation.
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3 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe how to visualize the multiplication of 10s quick facts.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
How does the strategy of subtracting 1 from each group help in multiplication?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of subtracting from groups of 10 in multiplication?
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