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Revision Notes

Finding Common Ground

CBSE · Class 7 · Mathematics

Quick revision notes for Finding Common Ground — CBSE Class 7 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

54 questions70 flashcards5 concepts

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Key Topics to Revise

1

1. HCF: Highest Common Factor

  • The HCF of two or more numbers is the greatest common factor.
  • For the room of 12 ft by 16 ft, the square tile size is 4 ft because 4 is the HCF of 12 and 16.
  • Factors of 12 are 1, 2, 3, 4, 6, 12.
2

2. Prime Factorisation and the Division Method

  • A prime is a number greater than 1 that has only 1 and the number itself as its factors.
  • The prime factorisation of a prime number is the prime number itself.
  • Prime factorisation means writing a number as a product of primes.
3

3. LCM: Lowest Common Multiple

  • The LCM of two or more given numbers is the lowest, smallest, or least of their common multiples.
  • For 6 cm and 8 cm strips, the shortest common toran length is 24 cm.
  • Kabamai gets free gajak again after 70 days because 70 is the LCM of 7 and 10.
4

4. Patterns, General Statements, and Special Properties

  • A statement describing a pattern or property that holds in all possible cases is called a general statement.
  • Generalisation is the process of making such a general statement.
  • If one number is a factor of another, the HCF of the pair equals the smaller number.

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Full Notes

Key Concepts

The factors of 12 are 1The Highest Common Factor isThe Lowest Common Multiple isA prime is a number greaterAny number can be written as

Frequently Asked Questions

What are the important topics in Finding Common Ground for CBSE Class 7 Mathematics?
Finding Common Ground covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Finding Common Ground — CBSE Class 7 Mathematics?
Understand the core concepts first, then work through the 54 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.

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