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Chapter 3: Number Play Notes

Home / Class Notes / Class 6 / Maths / Chapter 3: Number Play
✓ Free notes Class 6 Maths 1 study file

About these notes

Class 6 Maths Chapter 3 Number Play notes give clear definitions, divisibility rules, prime factorisation (example 2³ × 3² × 5) and quick revision tips for CBSE and Bihar Board students. Main sub-topics covered: factors and multiples, prime (अभाज्य संख्या) and composite (भाज्य संख्या) numbers, divisibility tests (2,3,4,5,6,8,9,10), factor trees and prime factorisation, and an introduction to HCF/LCM using prime factors. Ideal for Class 6 students preparing for school chapter tests, term exams and short revision before assessments; Merit Spring ROH also offers chapter tests and mock tests site-wide.

Key points you will learn

  • Class 6 Maths Chapter 3 Number Play notes
  • Definition of factor (गुणनखंड) and multiple (गुणज) with examples
  • Prime (अभाज्य संख्या) vs composite (भाज्य संख्या) numbers—how to identify
  • Divisibility rules: 2, 3 (sum of digits), 4 (last two digits), 5, 8, 9, 10
  • Prime factorisation using factor trees and repeated division, e.g. 2³ × 3² × 5
  • Finding HCF (महत्तम समापवर्तक) and LCM from prime factors
  • Quick tips for chapter test: practise factor trees and memorise key divisibility shortcuts

What is inside this chapter

📄

Number Play - Chapter 3 Notes (Class 6 Maths)

Class 6 Maths Number Play - Chapter 3 handwritten-style revision notes for CBSE and Bihar Board students.

📥 Open notes

Questions students ask

What is Class 6 Maths Chapter 3 Number Play about?

Chapter 3 introduces factors, multiples, prime and composite numbers and standard divisibility tests; it shows prime factorisation with factor trees and gives a basic way to use prime factors to get HCF and LCM. Revision tips and practice focus on applying these rules.

How to do prime factorisation for a number?

Use a factor tree or repeated division by primes, breaking a number into primes until only primes remain; write the result as a product like 2³ × 3² × 5. Practise with several examples to master the steps.

Difference between prime and composite numbers?

A prime number has exactly two distinct positive factors (1 and itself), while a composite number has more than two factors. Memorise small primes and use divisibility rules to test larger numbers quickly.

Where to find Class 6 Maths Chapter 3 Number Play notes and chapter test?

Merit Spring ROH hosts the Chapter 3 notes page for Class 6 Maths, and the site offers chapter tests and board-pattern mock tests you can attempt to check your understanding and speed.

How to prepare quickly for a chapter test on Number Play?

Start by memorising divisibility shortcuts and practising factor trees for prime factorisation, then solve several numbers for HCF and LCM; focused revision and timed chapter tests help improve accuracy and speed.

← Previous chapter Chapter 2: Lines and Angles

More Maths chapters

Chapter 1: Patterns Mathematics Chapter 2: Lines and Angles Chapter 4: Data Handling and Presentation Chapter 5: Prime Time Chapter 6: Perimeter and Area Chapter 7: Fractions All chapters →

Class 6 — other subjects

English Science Social Science