Prime and Composite Numbers, Factor, Prime Factorization and GCF

What is a prime number?

• A number divisible by 1 and itself only

• A number divisible by 2 and itself only

• A number divisible by 3 and itself only

• A number divisible by 1, 2, and itself only

Tags

CCSS.4.OA.B.4

What is the prime factorization of 100?

• 2 x 2 x 2 x 5 x 5

• 2 x 2 x 5 x 5

• 2 x 2 x 3 x 3 x 3

• 2 x 2 x 5 x 5 x 5

What is the greatest common factor of 16 and 24?

• 4

• 6

• 8

• 12

Which of the following is a prime number?

• 1

• 4

• 9

• 11

Tags

CCSS.4.OA.B.4

What is the prime factorization of 36?

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 3

• 2 x 3 x 3 x 3

• 2 x 2 x 2 x 2 x 3

Which of the following is not a prime number?

• 23

• 29

• 33

• 37

Tags

CCSS.4.OA.B.4

Which of the following is a composite number?

• 7

• 13

• 15

• 17

Tags

CCSS.4.OA.B.4

What is the prime factorization of 48?

• 2 x 2 x 2 x 3 x 3

• 2 x 2 x 2 x 2 x 3

• 2 x 3 x 3

• 2 x 2 x 3 x 3 x 3

What is the greatest common factor of 15 and 25?

• 3

• 5

• 15

• 25

What is the smallest prime number?

• 0

• 1

• 2

• 3

Tags

CCSS.4.OA.B.4