Greatest Common Factor

GCF of 18 and 24

• 2

• 3

• 4

• 6

What is the GCF of 36 and 24?

• 6

• 12

• 8

• 9

GCF 15 and 36

• 8

• 6

• 3

• 4

GCF of 32 and 40

• 2

• 4

• 6

• 8

GCF of 50 and 100

• 10

• 25

• 50

• 5

GCF of 10 and 50

• 10

• 2

• 5

• 50

The Greatest Common Factor of two prime numbers is

• 0

• 1

• There are no common factors.

• Themselves.

Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4

• 2

• 48

• 8

What is the GCF of 18 and 45?

• 3

• 12

• 9

• 6

What is the greatest factor of 28 and 49?

• 1

• 2

• 7

• 12