Prime Number Factor Trees and Gcf

What is the missing factor?

• 1

• 2

• 5

• 8

What are the missing factors?

• 2 and 3

• 3 and 6

• 3 and 3

• 1 and 9

Use a factor tree to find the prime factorisation of 168

Find the prime factorization of 18

• 2 • 9

• 2² • 3

• 2 • 3²

• 3 • 6

What is the GCF?

• 8

• 3

• 2

• 4

What is the GCF?

• 2

• 3

• 9

• 18

What is the GCF?

• 2

• 3

• 9

• 18

What is the GCF?

• 8

• 3

• 2

• 4

Find the prime factorization of 60

• 5 • 12

• 2 • 3² • 5

• 2² • 3 • 5

• 2⁷

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9