Prime and Composite Questions

Brenda said that the number 2 is prime because it has only two factors. Carla said that the number 2 is composite because it is even, and all even numbers are composite. Who is correct?

• Brenda is correct.

• Carla is correct.

• Both of them are correct.

• Neither of them is correct.

Which of these are composite numbers? Select TWO correct answers.

• 3

• 4

• 19

• 22

• 31

Jaylen was told to list all prime numbers between 30 and 50. Jaylen’s list is shown. 31, 37, 41, 47. The prime number missing from Jaylen’s list is (a)  

• 49

• 39

• 43

• 33

Four students each wrote down a number between 30 and 40. The list shows the numbers they wrote.

Elly—35

Ulysses—39

Maggie—37

Palmer—33

Which student wrote down a prime number?

• Elly

• Ulysses

• Maggie

• Palmer

Is 29 prime or composite?

• Prime

• Composite

Is 11 Prime or Composite?

• Prime

• Composite

Which of the following numbers is a prime number?

• 4

• 6

• 11

• 15

The number 25 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 2 factors

• exactly 2 factors

1 is neither prime nor composite

• True

• False

The number ​ (a)   is the only even prime number because it has ​ (b)  

• 2

• 4

• 1

• exactly two factors

• more than 2 factors

• exactly 1 factor