Chapter 3 of 5
Revision Notes
Playing with Numbers — Revision Notes
Gujarat Board · Class 6 · Mathematics
Playing with Numbers revision notes for Gujarat Board Class 6 Mathematics: 4 topics in quick points. Includes Factors and Multiples, Prime and Composite.
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.
Get complete notes with diagrams and examples
Full NotesKey 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 Factors and Multiples, Prime and Composite Numbers, Tests for Divisibility, Common Factors, Common Multiples, and Co-prime Numbers. Study these first, then practise questions on each for Class 6 exams.
How should I revise Playing with Numbers for Class 6 exams?
Learn the core ideas first, then work through the 45 practice questions on Playing with Numbers. Revise 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.
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