Understand and Find GCF

What is a factor of a number?

• A number that is added to another number to get a sum.

• A number that is multiplied by another number to get a product.

• A number that is subtracted from another number to get a difference.

• A number that is divided by another number to get a quotient.

What does the "greatest common factor" (GCF) of two numbers represent?

• The smallest factor shared by both numbers.

• The largest multiple shared by both numbers.

• The largest factor shared by both numbers.

• The smallest product of both numbers.

Which of the following is a complete list of all factors for the number 20?

• 1, 2, 4, 5

• 1, 2, 4, 5, 10

• 1, 2, 4, 5, 10, 20

• 2, 4, 5, 10, 20

A baker has 10 vanilla cookies and 15 chocolate cookies. If he wants to make identical boxes containing both types of cookies, what is the greatest number of boxes he can make?

• 1 box

• 2 boxes

• 3 boxes

• 5 boxes

What is the greatest common factor (GCF) of 24 and 32?

• 4

• 6

• 8

• 12

What is the greatest common factor (GCF) of 36 and 45?

• 3

• 6

• 9

• 12

Which statement accurately defines a prime number?

• A whole number greater than 1 that has exactly two factors: itself and 1.

• A number that can only be divided by 1.

• A number with more than two factors.

• Any odd number.

What is the greatest common factor (GCF) of 21 and 22?

• 1

• 2

• 3

• 7