Calculating the greatest common factor (GCF)

What is the GCF of 6 and 42

• 66

• 7

• 6

• 2 1/3

What is the greatest common factor of 12 and 16?

• 2

• 3

• 4

• 6

Find the GCF:

54, 72, and 81

• 2

• 9

• 4

What is the GCF of 6 and 24?

• 1

• 24

• 6

• 4

At Kentucky Fried Chicken, the kitchen staff baked 96 chicken legs and 144 thighs. The staff had to prepare platters for an office lunch. If each platter will have the same number of legs and thighs, what is the greatest number of platters they can make?

• 48

• 2

• 4

• 16

What is the GCF of 20 and 30?

• 10

• 2

• 5

• 20

Determine the GCF of 18 and 27.

• 12

• 9

• 15

• 6

Find the GCF of 48 and 60 using prime factorization.

• 12

• 25

• 20

• 15

What is the greatest common factor (GCF) of 15 and 40?

Based on the diagram, what is the GCF of 24 & 36?