1st period GCF Warm - up

Find the greatest common factor of 24 and 36.

• 6

• 18

• 30

• 12

What is the greatest common factor of 45 and 81?

• 27

• 36

• 15

• 9

Determine the greatest common factor of 60 and 75.

• 15

• 25

• 20

• 10

Calculate the greatest common factor of 72 and 96.

• 12

• 48

• 36

• 24

What is the greatest common factor of 54 and 90?

• 18

• 27

• 45

• 10

Determine the greatest common factor of 56 and 98.

• 14

• 35

• 21

• 7

Calculate the greatest common factor of 80 and 120.

• 20

• 40

• 60

• 100

What is the greatest common factor of 66 and 99?

• 33

• 44

• 55

• 22

Find the greatest common factor of 70 and 105.

• 50

• 35

• 15

• 25

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k