Class 6 Mathematics Chapter 3: Number Play — practice questions with answers
Free practice for Class 6 Mathematics, Chapter 3: Number Play. Try the solved questions below, then take a free test with instant marking and explanations.
31 questions8 easy, 14 medium, 9 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. In the park game, what number does each child say?
- The number of taller neighbours they have
- Their age
- Their place in the line
- The number of children in the line
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Answer: A. The number of taller neighbours they have
Why: A child says 2 if both neighbours are taller, 1 if one is, and 0 if neither is. [p.55–56]
Why: A child says 2 if both neighbours are taller, 1 if one is, and 0 if neither is. [p.55–56]
Q2. In a table, a cell is a ‘supercell’ if its number is ______ than all its adjacent cells.
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Answer: larger
Why: A cell is coloured (a supercell) if its number is larger than the numbers in its neighbouring cells. [p.57]
Why: A cell is coloured (a supercell) if its number is larger than the numbers in its neighbouring cells. [p.57]
Q3. How many 2-digit numbers are there?
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Answer: 90 (± 0)
Why: 2-digit numbers go from 10 to 99: 99 − 10 + 1 = 90. [p.60]
Why: 2-digit numbers go from 10 to 99: 99 − 10 + 1 = 90. [p.60]
Q4. Numbers like 66, 848 and 1111 that read the same from left to right and right to left are called ______.
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Answer: palindromes
Why: The chapter calls these palindromes or palindromic numbers. [p.61]
Why: The chapter calls these palindromes or palindromic numbers. [p.61]
Q5. The number 6174, which every 4-digit number (with at least two different digits) reaches, is called the ______ constant.
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Answer: Kaprekar
Why: D.R. Kaprekar, a school teacher in Devlali, Maharashtra, discovered this in 1949. [p.62–63]
Why: D.R. Kaprekar, a school teacher in Devlali, Maharashtra, discovered this in 1949. [p.62–63]
Q6. For 6382, Kaprekar’s first step is A = 8632 and B = 2368. What is C = A − B?
- 6,264
- 6174
- 6364
- 5264
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Answer: A. 6,264
Why: 8,632 − 2,368 = 6,264. [p.63]
Why: 8,632 − 2,368 = 6,264. [p.63]
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Frequently asked questions
How many practice questions are there for Class 6 Mathematics Chapter 3: Number Play?
31 questions (8 easy, 14 medium, 9 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 6 Mathematics syllabus, used by CBSE and many state boards.