GCF(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

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

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 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

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

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

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

Tags

CCSS.4.OA.B.4

Find the greatest common factor of 20 and 30.

• 2

• 5

• 10

• 15

There are 40 girls and 32 boys who want to participate in 5th grade intramurals. If each team must

have the same number of girls and the same number of boys. What is the greatest number of teams that can participate in intramurals?

• 6

• 4

• 8

• 2

Princess is making identical balloon arrangements for a party. She has 32 maroon balloons, 24 white

balloons, and 16 orange balloons. She wants each arrangement to have the same number of each

color. What is the greatest number of arrangements that she can make if every balloon is used?

• 6

• 2

• 4

• 8