Finding the Greatest Common Factor
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Objective
I can find the greatest common factor (GCF) of two numbers by listing their factors and identifying the largest one they share.
Part 1 of 3
Warm-up video
Khan Academy · 6:20Vetted 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 3
Practice
4 questions
List all the factors of 15 and 10. What is the greatest common factor of these two numbers?
Determine the GCF of 18 and 24 by listing their factors. Explain how you found the answer.
Part 3 of 3
Exit ticket
Quick comprehension check
“List all the factors of 30 and 45. What is the greatest common factor of these two numbers? List all the factors of 28 and 42. What is the greatest common factor of these two numbers? ”
Sample answer included in the free materials
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