Prime Factorization, Gcf, Lcm

If a number is odd it will never have a 2 in its prime factorization.

• True

• False

Which of the following show the prime factorization of number 36? (check all that apply)

• 2² x 3²

• 6 x 6

• 2 x 2 x 3 x 3

• 2 x 3 x 3 x 3

Find the Greatest Common Factor of:

• 2

• 4

• 24

• 96

Find the Greatest Common Factor of:

• 1

• 15

• 115

• 345

Find the Greatest Common Factor of:

Find the Least Common Multiple of:

• 1

• 5

• 10

• 20

Find the Least Common Multiple of:

• 1

• 2

• 40

• 80

Find the Least Common Multiple of:

Find the Least Common Multiple of:

What is the GCF of 21 and 7?

• 7

• 21

• 3

• 8