Calculating the Greatest Common Factor

What is the Greatest Common Factor of 16 and 24?

• 2 x 3 = 6

• 2 x 2 x 2 = 8

• 3 x 2 x 4 = 24

• 2 x 3 x 2 = 12

What is the Greatest Common Factor of 9 and 36?

• 3 x 3 x 2 x 2 = 36

• 3 x 3 x 3 = 27

• 3 x 3 x 2 = 18

• 3 x 3 = 9

Find the Greatest Common Factor (GCF) of 18 and 45.

• 3 x 3 x 2 = 18

• 3 x 3 = 9

• 3 x 3 x 5 = 45

• 2 x 3 x 2 x 3 = 36

Find the GCF of 150 and 225.

• 2 x 3 x 3 x 3 x 5 = 270

• 2 x 3 x 3 x 5 = 90

• 3 x 5 x 5 = 75

• 3 x 3 x 3 x 5 = 135

2 x 8 = 16 is the Greatest Common Factor (GCF) of what numbers?

• 90 and 120

• 120 and 140

• 144 and 160

• 110 and 150

3 x 5 = 15 is the Greatest Common Factor (GCF) of what numbers?

• 30, 70 and 90

• 20, 80 and 100

• 45, 60 and 90

• 25, 45, and 85

2 x 2 x 2 x 3 is the Greatest Common Factor of what numbers?

• 12, 24 and 36

• 24, 48 and 72

• 24, 32 and 48

• 12, 32 and 72

What is the GCF of the following numbers 27, 45, and 81?

• 3 x 3 x 5

• 3 x 3 x 3

• 3 x 3

• 3 x 3 x 3 x 2

2 x 2 x 2 x 5 is the Greatest Common Factor of what numbers?

• 30, 120 and 140

• 40, 120 and 160

• 20, 50 and 120

• 40, 100, and 170

There are 75 girls and 105 boys who want to participate in an Educational Tour for Camp Mateo Capinpin ES. If each group must

have the same number of girls and the same number of boys. What is the greatest number of group that can participate in the Educational Tour?

• 3 x 3 x 4

• 3 x 3 x 3

• 3 x 5

• 3 x 3 x 6