Factors and Multiples

What is a factor?

• A number that divides another number without leaving a remainder.

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

• A number that can only be divided by itself and one.

• A number that is always greater than the number it divides.

What is the greatest common factor (GCF) of 8 and 12?

• 2

• 3

• 4

• 6

What is the first five multiples of 5?

• 5, 10, 15, 20, 30

• 5, 10, 15, 20, 25

• 5, 10, 15, 20, 35

• 5, 10, 15, 20, 40

What is a prime number?

• A number that is divisible by 2

• A number greater than 1 that has no positive divisors other than 1 and itself

• A number that can be expressed as a product of two integers

• A number that is less than 1

What are the factors of 15?

• 1, 2, 3, 5

• 1, 3, 5, 15

• 2, 4, 6, 8

• 1, 5, 10, 15

What is a multiple?

• A number that can be divided by another number without a remainder.

• A number that is always even.

• A number that is greater than zero.

• A number that can only be divided by itself.

What are the common factors of 6 and 15?

• 1, 2, 3

• 1, 3

• 3, 5

• 2, 5, 6

How do you find the factors of a number?

• To find the factors of a number, divide it by all integers up to that number and see which ones divide evenly.

• To find the factors of a number, multiply it by all integers up to that number.

• To find the factors of a number, add all integers up to that number together.

• To find the factors of a number, subtract all integers up to that number from it.

Which number is neither a prime nor a composite number?

• 0

• 1

• 2

• 3

Which number is NOT a multiple of 3?

• 12

• 15

• 14

• 9