Greatest common factor of 10 and 20

• 5

• 2

• 10

Greatest common factors of 9 and 15

• 5

• 4

• 3

GCF of 32 and 40

• 2
• 4
• 6
• 8

GCF of 18 and 24

• 2
• 3
• 4
• 6

What is the GCF of 36 and 24?

• 6

• 12

• 8

• 9

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

What is the GCF of 20 and 30?

• 5
• 2
• 10
• 20

GCF of 99 and 54

• 9
• 3
• 6
• 8

GCF of 8 and 20

• 8
• 2
• 4
• 10

What is the Greatest Common Factor of 12 and 48?

• 6

• 12

• 4

• 16