Identifying Prime and Composite Numbers

What is a prime number?

• A number with more than two factors

• A number with only one factor

• A number with exactly two factors

• A number that is even

Tags

CCSS.4.OA.B.4

Which of the following is a composite number?

• 2

• 3

• 4

• 5

Tags

CCSS.4.OA.B.4

What are the factors of 16?

• 1, 2, 4, 6, 16

• 1, 2, 5, 8, 16

• 1, 2, 4, 8, 16

• 1, 2, 3, 8, 16

Tags

CCSS.4.OA.B.4

Which number is neither prime nor composite?

• 0

• 1

• 3

• 2

Tags

CCSS.4.OA.B.4

Why is the number 2 considered a prime number?

• It is an even number

• It has exactly two factors: 1 and itself

• It has only one factor

• It is the smallest number

Tags

CCSS.4.OA.B.4

Which of the following is a factor of 15?

• 4

• 2

• 5

• 6

Tags

CCSS.4.OA.B.4

How many factors does the number 15 have?

• 2

• 4

• 5

• 3

Tags

CCSS.4.OA.B.4

What makes a number composite?

• Being an even number

• Having more than two factors

• Having exactly two factors

• Having only one factor

Tags

CCSS.4.OA.B.4

Which of the following is NOT a factor of 13?

• None of the above

• 13

• 3

• 1

Tags

CCSS.4.OA.B.4

Why is 13 considered a prime number?

• It has exactly two factors: 1 and itself

• It has only one factor

• It is an odd number

• It is greater than 10

Tags

CCSS.4.OA.B.4