Factors & GCFs

What is the Greatest Common Factor of 12 and 18?

• 1

• 3

• 6

• 8

What is the GCF of 9 and 15?

• 1

• 3

• 6

• 8

What is the GCF of 12 and 30?

• 2

• 4

• 6

• 8

• 12

What is the greatest common factor of 6 and 21?

• 6
• 2
• 3
• 7

Which set of numbers show all the factors for 15?

• 7, 8
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

Tags

CCSS.4.OA.B.4

GCF of 15 and 35

• 15
• 3
• 7
• 5

What is the GCF of 20 and 30?

• 5
• 2
• 10
• 20

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9