GCF and LCM

What is the prime factorization of 24?

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 5

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 2

Which number is divisible by both 3 and 5: 15, 20, or 25?

• 20

• 25

• 30

• 15

Find the factors of 36.

• 1, 2, 3, 4, 6, 9, 12, 18, 36

• 1, 2, 3, 4, 6, 9, 12, 18

• 1, 2, 3, 4, 6, 9, 12, 18, 24, 30

• 1, 2, 3, 4, 6, 9, 12, 18, 24

Is 17 a prime number? (Yes/No)

• No

• Maybe

• Sometimes

• Yes

What is the least common multiple of 8 and 12?

What is the prime factorization of 48?

• 2 x 2 x 2 x 3 x 3

• 2 x 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 2

• 2 x 2 x 2 x 2 x 5

Which number is divisible by both 2 and 7: 14, 21, or 28?

• 21

• 28

• 35

• 14

Find the factors of 45.

• 1, 3, 5, 9, 15, 45

• 10, 15, 20, 25, 30, 35

• 1, 2, 3, 4, 5, 6

• 2, 3, 5, 9, 15, 45

Is 23 a prime number? (Yes/No)

• Yes

• Sometimes

• Maybe

• No

What is the least common multiple of 6 and 9?

• 12

• 15

• 21

• 18