Exploring Factors, Prime and Composite Numbers

What are factors?

• Numbers that can be divided by other numbers

• Numbers that can be multiplied together to get other numbers

• Numbers that are always prime

• Numbers that are always composite

Tags

CCSS.4.OA.B.4

What is the first step in finding the factors of a number?

• Start with the number 2

• Start with the number 3

• Start with the number 5

• Start with 1 times the number you are searching for

Tags

CCSS.4.OA.B.4

Which of the following is a factor of 24?

• 5

• 7

• 11

• 8

Tags

CCSS.4.OA.B.4

How many factors does the number 16 have?

• 3

• 6

• 5

• 4

Tags

CCSS.4.OA.B.4

What defines a composite number?

• A number with only one factor

• A number with more than two factors

• A number that is always even

• A number with exactly two factors

Tags

CCSS.4.OA.B.4

Which of the following numbers is composite?

• 3

• 2

• 12

• 5

Tags

CCSS.4.OA.B.4

What defines a prime number?

• A number with exactly two factors

• A number that is always odd

• A number with more than two factors

• A number with only one factor

Tags

CCSS.4.OA.B.4

Which of the following numbers is prime?

• 7

• 6

• 4

• 9

Tags

CCSS.4.OA.B.4

Why is the number 1 neither prime nor composite?

• Because it is an even number

• Because it is a composite number

• Because it has only one factor

• Because it is a prime number

Tags

CCSS.4.OA.B.4

Which of the following numbers is composite?

• 7

• 18

• 13

• 31

Tags

CCSS.4.OA.B.4