Prime and Composite Questions

Which number below is NOT prime?

• 3

• 7

• 9

• 11

True/False The number 1 is neither prime nor composite.

• True

• False

Match the following

• 2

• Prime Numbers

• Have more than 2 factors

• The smallest prime number

• Only has 2 factors

  1 and itself

• Composite Numbers

• 1

• Is not prime or composite

Are each of these numbers prime or composite?

• composite

• 7

• composite

• 3

• prime

• 12

• prime

• 15

• composite

• 10

Which of the following numbers is a composite number?

• 2

• 3

• 5

• 9

Which of the following pairs of numbers are both prime?

• 23 and 29

• 25 and 27

• 31 and 33

• 35 and 37

Identify the prime number from the list below.

• 42

• 43

• 44

• 45

Which of the following pairs of numbers are both composite?

• 17 and 19

• 21 and 23

• 25 and 27

Which of these numbers is not prime?

• 17

• 25

• 23

• 37

what are the first 5 prime numbers in ascending order?

• 2,3,4,5,11

• 1,2,3,5,11

• 2,3,5,7,11

• 2,3,11,7,5