GCF, LCM, Prime Factorization

What is the expanded prime factorization of 36?

• 2 x 18

• 2 x 2 x 3 x 3

• 2 x 2 x 9

• 2 x 2 x 2 x 3

What is the standard prime factorization of 18?

What is the GCF of 7 and 15?

• 2

• 1

• 7

• 60

What is the LCM of 4 and 18?

• 18

• 36

• 4

• 108

Find the GCF of 64 and 144

• 8

• 6

• 16

• 2

What is the LCM of 4 and 12? 

• 4

• 8

• 12

• 16

Find the LCM (Least Common Multiple) of 18 and 24.

• 6

• 72

• 24

• 5

What is the least common multiple (LCM) of 8 and 5?

• 50

• 40

• 5

• 8

What is the prime factorization of 36?

• 2 x 2 x 3 x 3

• 2 x 3 x 6

• 2 x 2 x 9

• 2 x 3 x 3

Use a factor tree to find the prime factorisation of 168