Identifying Prime and Composite Numbers

What defines a prime number?

• A number divisible by 1 only.

• A number with more than two factors.

• A number divisible by itself only.

• A number with exactly two factors: 1 and itself.

Tags

CCSS.4.OA.B.4

Which of the following is a factor of 24?

• 9

• 12

• 7

• 13

Tags

CCSS.4.OA.B.4

Which of the following numbers is a composite number?

• 5

• 24

• 3

• 2

Tags

CCSS.4.OA.B.4

What makes a number composite?

• Having no factors.

• Being divisible by 1 and itself only.

• Having more than two factors.

• Being an even number.

Tags

CCSS.4.OA.B.4

Which of the following is not a factor of 24?

• 3

• 4

• 6

• 7

Tags

CCSS.4.OA.B.4

Why is 2 considered a prime number?

• It is divisible by numbers other than 1 and itself.

• It has exactly two factors: 1 and 2.

• It is an even number.

• It is divisible by 3.

Tags

CCSS.4.OA.B.4

Which statement is true about every even number other than 2?

• It is prime.

• It is neither prime nor composite.

• It is composite.

• It has no factors.

Tags

CCSS.4.OA.B.4

What is the significance of the number 2 among even numbers?

• It has no factors.

• It is the smallest even number.

• It is the only even prime number.

• It is composite.

Tags

CCSS.4.OA.B.4

What is unique about the number 1 in terms of factors?

• It has exactly two factors.

• It is divisible by 0.

• It has more than two factors.

• It has only one factor, itself.

Tags

CCSS.4.OA.B.4

Is the number 17 prime, composite, or neither?

• Prime

• Undefined

• Composite

• Neither

Tags

CCSS.4.OA.B.4