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Finding the Greatest Common Factor. Grade 5. Lesson Objectives. 6.B.1.c Identify the greatest common factor 3.A.1.a Use technology tools, including software and hardware, from a range of teacher-selected options to learn a new content or reinforce skills. Think Backwards….

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Presentation Transcript
lesson objectives
Lesson Objectives
  • 6.B.1.c Identify the greatest

common factor

3.A.1.a Use technology tools, including software and hardware, from a range of teacher-selected options to learn a new content or reinforce skills

think backwards
Think Backwards…
  • Find Factors
  • Circle Common Factors
  • Group Greatest Factor
step 1 find the factors
Step 1: Find the Factors
  • 24 – 1,2,3,4,6,8,12,24
  • 36 – 1,2,3,4,6,9,12,18,36
step 2 circle common factors
Step 2: Circle Common Factors
  • 24 – 1,2,3,4,6,8,12,24
  • 36 – 1,2,3,4,6,9,12,18,36
step 3 group the greatest factor
Step 3: Group the Greatest Factor
  • 24 – 1,2,3,4,6,8,12,24
  • 36 – 1,2,3,4,6,9,12,18,36
find the gcf of 12 and 24
Find the GCF of 12 and 24
  • Step 1: Find the factors
  • 12 – 1,2,3,4,6,12
  • 24 – 1,2,3,4,6,8,12,24
find the gcf of 12 and 241
Find the GCF of 12 and 24
  • Step 2: Circle the common factors
  • 12 – 1,2,3,4,6,12
  • 24 – 1,2,3,4,6,8,12,24
find the gcf of 12 and 242
Find the GCF of 12 and 24
  • Step 3: Group the greatest factor
  • 12 – 1,2,3,4,6,12
  • 24 – 1,2,3,4,6,8,12,24
your turn
Your turn!
  • Find the Greatest Common Factor of 16 and 20.
  • Remember…Find Factors, Circle Common, Group Greatest!
are you ready

Are you ready?

Let's try some more!