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Revision Notes

Playing with Numbers

Gujarat Board · Class 6 · Mathematics

Quick revision notes for Playing with Numbers — Gujarat Board Class 6 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

45 questions5 concepts

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Key Topics to Revise

1

Factors and Multiples

  • A factor of a number exactly divides that number leaving remainder 0.
  • 1 is a factor of every number.
  • Every number is a factor of itself.
2

Prime and Composite Numbers

  • A prime number has exactly 2 factors: 1 and itself.
  • A composite number has more than 2 factors.
  • The number 1 is NEITHER prime NOR composite — it has only 1 factor.
3

Tests for Divisibility

  • Divisibility by 2: Last digit (ones place) is 0, 2, 4, 6, or 8.
  • Divisibility by 3: Sum of all digits is divisible by 3.
  • Divisibility by 4: Number formed by last TWO digits (tens and ones) is divisible by 4.
4

Common Factors, Common Multiples, and Co-prime Numbers

  • Common factors of two or more numbers are factors that are present in ALL the given numbers.
  • To find common factors, list all factors of each number, then identify those appearing in all lists.
  • Common multiples of two or more numbers are multiples that appear in ALL their multiple lists.

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Full Notes

Key Concepts

A factor of a numberA multiple of a numberA prime number is a naturalA composite number is a naturalDivisibility rules are quick ways

Frequently Asked Questions

What are the important topics in Playing with Numbers for Gujarat Board Class 6 Mathematics?
Key topics in Playing with Numbers include Playing with Numbers — Complete Chapter Overview, Playing with Numbers – Complete Chapter Overview, Playing with Numbers - Complete Concept Map. These are the concepts Gujarat Board Class 6 examiners draw on most — study them first, then practise related questions.
How to score full marks in Playing with Numbers — Gujarat Board Class 6 Mathematics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Playing with Numbers

All 5 chapters — Gujarat Board Class 6 Mathematics Revision Notes

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