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Formula Sheet

Large Numbers Around Us — Formula Sheet

CBSE · Class 7 · Mathematics

11 formulas from Large Numbers Around Us (CBSE Class 7 Mathematics) on one page, grouped by topic. Part of the CBSE Class 7 Mathematics syllabus.

37 questions60 flashcards11 formulas & key relations5 concepts

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11 Entries · 5 Sections

Formulas and Key Relations

1. Large Numbers: Lakh, Crore, Arab

1 lakh = 100 × 1 thousand

1 crore = 100 × 1 lakh

1 arab = 100 × 1 crore

1 lakh = 1,00,000

1 crore = 1,00,00,000

2. Reading and Writing Large Numbers

Indian grouping: last 3 digits, then groups of 2 digits

International grouping: groups of 3 digits throughout

3. Approximation, Rounding, and Nearest Neighbours

rounding up = approximated number > actual number

rounding down = approximated number < actual number

4. Comparing Large Quantities with Familiar Objects

Approximate building height = 4 × Somu's height per floor × number of floors

1 lakh = 1 followed by 5 zeroes = 1,00,000

Full sheet with units and worked examples

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Frequently Asked Questions

What are the important topics in Large Numbers Around Us for CBSE Class 7 Mathematics?
Key topics in Large Numbers Around Us include Understanding One Lakh and Related Large Numbers, Estimation, Rounding, and Approximation, Seeing Large Numbers in Real Life, Rapid Counting and Calculator Patterns. Study these first, then practise questions on each for Class 7 exams.
How many formulas are in Large Numbers Around Us?
This sheet lists 11 formulas from Large Numbers Around Us, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Large Numbers Around Us for Class 7 exams?
Learn the core ideas first, then work through the 37 practice questions on Large Numbers Around Us. 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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All CBSE Class 7 Mathematics Formula Sheet

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