Grade 5 Questions with Answers on Prime and Composite Numbers

Grade 5 maths questions on prime and composite numbers answers are presented.

  1. True or False: All prime numbers are odd.
  2. What is the smallest prime number?
  3. True or False: All even numbers greater than 2 are composite.
  4. Which of the following numbers is prime?
    1. 12
    2. 6
    3. 9
    4. 7


  5. Which of the following numbers is composite?
    1. 21
    2. 2
    3. 13
    4. 11


  6. Which of the following numbers is prime?
    1. 27
    2. 31
    3. 1
    4. 39


  7. Which of the following numbersis composite?
    1. 1
    2. 57
    3. 17
    4. 41


  8. Which number is neither prime nor composite?
    1. 15
    2. 41
    3. 18
    4. 1


  9. Which is prime and which is composite?
    1. 16
    2. 24
    3. 29
    4. 30
    5. 31
    6. 33
    7. 81
    8. 97
    9. 100
    10. 101

  10. List all prime numbers from 2 to 31.

Answers to the Above Questions

  1. False , 2 is even and prime.

  2. 2

  3. True , because all even numbers are divisible by 2.

  4. 7

  5. 21

  6. 31

  7. 57
  8. 1

  9. prime: 29 , 31 , 97 , 101
    composite: 16 , 24 , 30 , 33 , 81 , 100
  10. 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31

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