CBSE · Class 6 · Mathematics · Chapter 3

Number Play

Investigate number patterns, place value, estimation and strategies for solving interesting numerical problems.

8 lessons 50 min
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Lessons in this chapter

  1. 1Numbers as Clues and SupercellsUse neighbouring values to decode arrangements and build number puzzles.
  2. 2Number Lines, Place Value, and Digit SumsRead number scales and investigate what the digits of a number reveal.
  3. 3Palindromes, Kaprekar, and Calendar PatternsExplore what happens when digits are mirrored, rearranged, and repeated in familiar settings.
  4. 4Mental Arithmetic and Possible ResultsBuild useful calculations and explain which sums and differences can exist.
  5. 5Visual Number Patterns and the Collatz RuleUse structure to count efficiently and investigate sequences made by a precise rule.
  6. 6Making Sensible EstimatesBreak large quantities into manageable parts and explain how close an answer needs to be.
  7. 7Games and Winning StrategiesWork backwards from a target and use complementary moves to keep control of a number game.
  8. 8Chapter Summary and PracticeConnect the chapter’s comparison rules, digit puzzles, estimates, patterns, and game strategies.
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