Prime and Composite Numbers Quiz - CBSE Class 5 Mathematics

Free practice quiz: Prime and Composite Numbers (CBSE Class 5 Mathematics). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is a prime number?

   1. 2
   2. 4
   3. 6
   4. 8
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   Answer: A. 2

   A prime number has only two distinct positive divisors: 1 and itself. 2 is a prime number because it can only be divided by 1 and 2.

2. Is the number 9 a prime or composite number?

   1. Prime
   2. Composite
   3. Neither
   4. Both
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   Answer: B. Composite

   9 is a composite number because it can be divided by 1, 3, and 9, making it have more than two divisors.

3. What is the sum of the first two prime numbers?

   1. 2
   2. 3
   3. 5
   4. 4
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   Answer: C. 5

   The first two prime numbers are 2 and 3. Their sum is 5.

4. The number 49 is:

   1. Prime
   2. Composite
   3. Neither
   4. Both
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   Answer: B. Composite

   49 is a composite number because it can be divided by 1, 7, and 49.

5. What is the smallest odd composite number?

   1. 5
   2. 7
   3. 9
   4. 11
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   Answer: C. 9

   The smallest odd composite number is 9 because it's not prime and it has divisors 1, 3, and 9.

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• Even and Odd Numbers
• Factors and Multiples
• Ordering Numbers
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