Greatest Common Factor / Least Common Multiple- Review

What are all the factors of 24

• 1,2,3,4,6,8,12,24

• 1,2,4,5,12,24

• 2,3,4,6,8,12,24

• 24,1

What are all factors of 36

• 1, 2, 3 ,4, 6, 9 ,12 ,36

• 1,36

• 2,4,5,6,9,36

• 4,6,9,12,24

What are all the 42

• 1,2,3,6,7,14,21,42

• 1,42

• 1,6,7,2,42

• 1,2,3,4,6

What are all the factors of 50

• 1,2,5,10,25,50

• 25,2,50,1

• 1,2,5,10

• 50,1

What are all the factors of 30

• 1,2,3,5,6,10,15,30

• 1,5,6,15,30

• 1,30

• 2,15,30

What is the GCF of 21 and 12?

• 3

• 4

• 7

• 2

What is the GCF of 24 and 27?

• 3

• 4

• 6

• 9

What is the GCF of 12 and 20?

• 4

• 3

• 2

• 6

What is the GCF of 42 and 6?

• 6

• 7

• 1

• 3

What is the GCF of 40 and 50?

• 10

• 5

• 6

• 11