Gcf and Factorization

Which is not a factor of 18?

• 7

• 2

• 3

• 9

Create a factor tree and find the prime factorization for 80

• 2⁴⋅5

• 4²⋅5

• 2⋅2⋅2

• 8⋅5⋅2

Use a number tree to find the prime factorization of 48

• 4x2x6

• 4x2²x3

• 3x2⁴

• 12x4

GCF of 99 and 54

• 9

• 3

• 6

• 8

What is the GCF and LCM of 12 and 18?

• 6 and 18

• 6 and 36

• 12 and 36

• 3 and 36

What is the GCF and LCM 9 and 15?

• 3 and 15

• 9 and 3

• 45 and 3

• 3 and 45

2 x 2 x 2 is the prime factorization of

• 6

• 12

• 22

• 8

What is the GCF of 12 and 30?

• 2

• 4

• 6

• 8

• 12

Which pair of numbers has a GCF of 8?

• 8, 36

• 40, 80

• 16, 56

• 24, 42

What is the greatest factor of 28 and 49?

• 1

• 2

• 7

• 12