Prime Factorization

What is the missing factor?

• 1

• 2

• 5

• 8

What are the missing factors?

• 2 and 3

• 3 and 6

• 3 and 3

• 1 and 9

What is the missing factor?

• 3

• 5

• 6

• 7

Find the prime number

• 10
• 9
• 7
• 4

What factors do these numbers (18 and 27) have in common?

• 2

• 2 and 3

• 3 and 3

• 3

What factors do these numbers (16 and 24) have in common?

• 2

• 3

• 2 and 2

• 2, 2, and 2

Which number is a factor of 36?

• 7
• 9
• 10
• 5

Which number is a factor of 54?

• 5
• 9
• 4
• 3

Which of the following numbers is prime?

• 15

• 18

• 19

• 21

Which of the following is NOT prime?

• 11

• 13

• 19

• 21