Greatest Common Factor (GCF)

What is the greatest common factor?

• The greatest whole number that will divide evenly into every number in a group of numbers

• The greatest number that 2 numbers multiply to

• The largest factor of two numbers that isn't prime

• The largest factor of two numbers that is prime

What is the GCF of 6 and 14?

• 2

• 6

• 7

• 12

What is the GCF of 12 and 24?

• 4

• 6

• 12

• 24

What is the GCF of 20 and 30?

• 5

• 6

• 10

• 15

What is the GCF of 5 and 20,657

• 1

• 5

• 753

• How are we supposed to figure that out?

What is the GCF of 3, 7, and 438,592?

• 1

• 3

• 7

• 6,465

What is the GCF of 3, 12, and 15?

• 1

• 3

• 6

• 15

What is the GCF of 5, 120, 245, 675, and 1,340?

• 1

• 5

• 350

• 785

What is the GCF of 20, 28, and 36?

• 1

• 2

• 4

• 12