Prime Factorization

Which number is a prime number?

• 6

• 10

• 7

• 9

Tags

CCSS.4.OA.B.4

Which number is a prime number?

• 2

• 8

• 21

• 15

Tags

CCSS.4.OA.B.4

Which list contains only prime numbers?

• 2, 5, 10, 13

• 2, 7, 13, 20

• 4, 5, 11, 17

• 2, 3, 5, 7

Tags

CCSS.4.OA.B.4

What is the prime factorization of 10?

• 
  

  $1\times10$

• $2\times5$

• $2\times2\times5$

• $3+7$

Tags

CCSS.4.OA.B.4

 $2\times2\times2\times3$  is the prime factorization of what number?

• 18

• 24

• 9

• 12

Tags

CCSS.4.OA.B.4

What is the prime factorization of 20?

• $2\times2\times5$

• $10+10$

• $4\times5$

• $1\times20$

 $3\times3\times7$  is the prime factorization of what number?

• 42

• 13

• 21

• 63

Which number is a composite number?

• 25

• 29

• 31

• 19

Tags

CCSS.4.OA.B.4

What is the prime factorization of 25?

• $1\times25$

• $5\times5$

• $5+20$

• $2\times2\times2\times3$

Which number is neither prime nor composite?

• 100

• 52

• 87

• 1

Tags

CCSS.4.OA.B.4