Greatest Common Factor

The Greatest Common Factor of two prime numbers is

• 0
• 1
• There are no common factors.
• Themselves.

There are 40 girls and 32 boys who want to participate in 6th grade intramurals. If each team must
have the same number of girls and the same number of boys. What is the greatest number of teams that can participate in intramurals?

• 6
• 4
• 8
• 2

GCF of 32 and 40

• 2
• 4
• 6
• 8

GCF 15 and 36

• 8

• 6

• 3

• 4

GCF of 10 and 50

• 10
• 2
• 5
• 50

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

GCF of 18 and 24

• 2
• 3
• 4
• 6

What are the factors of 24?

• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 3, 6, 8, 24
• 1, 2, 3, 4, 6
• 1, 24

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

GCF of 16 and 18

• 4
• 2
• 6
• 8