Finding the Greatest Common Factor
Grade 645 min
aligned to 5.nf.2
Learning Objective
I can find the greatest common factor (GCF) of two numbers by listing their factors and identifying the largest one they share.
Lesson Flow
Watch Video
Greatest common factor explained | Factors and multiples | Pre-Algebra | Khan Academy
Khan Academy
Practice
4 questions • Short answer
Exit Ticket
“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? ”
Teacher Guide
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- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
