Identifying Greatest Common Factor

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

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

What is the GCF of 8 and 10?

• 1
• 3
• 4
• 2

Find the greatest common factor of 20 and 30

• 2
• 5
• 10
• 15

Find the greatest common factor of 24 and 48

• 4
• 12
• 24
• 48

Find the greatest common factor of 30 and 36

• 2
• 3
• 6
• 18

Find the greatest common factor of 32 and 48

• 2
• 8
• 16
• 18

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

Find the Greatest  Common Factor (GCF) of 14 & 22.

• 1
• 2
• 7
• 14

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