Natural Numbers Quiz - CBSE Class 6 Mathematics

Free practice quiz: Natural Numbers (CBSE Class 6 Mathematics). 10 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is a natural number?

   1. -5
   2. 0
   3. 3
   4. 2.5
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   Answer: C. 3

   Natural numbers are positive integers starting from 1. In this case, 3 is a natural number.

2. What is the sum of the first five natural numbers?

   1. 15
   2. 20
   3. 10
   4. 5
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   Answer: A. 15

   The first five natural numbers are 1, 2, 3, 4, and 5. Their sum is 1+2+3+4+5 = 15.

3. What is the product of the first four natural numbers?

   1. 10
   2. 24
   3. 16
   4. 20
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   Answer: B. 24

   The first four natural numbers are 1, 2, 3, and 4. Their product is 1 × 2 × 3 × 4 = 24.

4. How many even natural numbers exist between 1 and 20?

   1. 10
   2. 9
   3. 11
   4. 8
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   Answer: A. 10

   The even natural numbers between 1 and 20 are: 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 — a total of 10.

5. You are thinking of a natural number. If you subtract 5 from it and the result is 15, what is the number?

   1. 20
   2. 10
   3. 15
   4. 5
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   Answer: A. 20

   Let the number be n. Thus, n - 5 = 15. So, n = 15 + 5 = 20.

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