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Formula Sheet

Finding Common Ground — Formula Sheet

CBSE · Class 7 · Mathematics

9 formulas from Finding Common Ground (CBSE Class 7 Mathematics) on one page, grouped by topic. Part of the CBSE Class 7 Mathematics syllabus.

54 questions70 flashcards9 formulas & key relations5 concepts

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9 Entries · 4 Sections

Formulas and Key Relations

HCF and Common Factors

HCF × LCM = Product of the two numbers

HCF of 30 and 72: 30 = 2 × 3 × 5; 72 = 2 × 2 × 2 × 3 × 3; HCF = 2 × 3 = 6

HCF of 225 and 750: 225 = 3 × 3 × 5 × 5; 750 = 2 × 3 × 5 × 5 × 5; HCF = 3 × 5 × 5 = 75

LCM and Common Multiples

LCM of 14 and 35: 14 = 2 × 7; 35 = 5 × 7; LCM = 2 × 5 × 7 = 70

LCM of 96 and 360: 96 = 2 × 2 × 2 × 2 × 2 × 3; 360 = 2 × 2 × 2 × 3 × 3 × 5; LCM = 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 = 1440

Patterns, Properties, and Shortcuts

If one number is a factor of another, HCF of the pair = smaller number

If both numbers are doubled, their HCF also doubles

HCF of 14 × 6 and 14 × 9 = 42

Key relations

For example, 90 = 3 × 3 × 2 × 5, and 105 = 3 × 5 × 7.

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Frequently Asked Questions

What are the important topics in Finding Common Ground for CBSE Class 7 Mathematics?
Key topics in Finding Common Ground include HCF: Highest Common Factor, Prime Factorisation and the Division Method, LCM: Lowest Common Multiple, Patterns, General Statements, and Special Properties. Study these first, then practise questions on each for Class 7 exams.
How many formulas are in Finding Common Ground?
This sheet lists 9 formulas from Finding Common Ground, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Finding Common Ground for Class 7 exams?
Learn the core ideas first, then work through the 54 practice questions on Finding Common Ground. 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.

More resources for Finding Common Ground

All CBSE Class 7 Mathematics Formula Sheet

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