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Large Numbers Around Us — Syllabus

CBSE · Class 7 · Mathematics

What Large Numbers Around Us covers in CBSE Class 7 Mathematics: 4 topics, for the 2026-27 session. Part of the CBSE Class 7 Mathematics syllabus.

37 questions60 flashcards11 formulas & key relations5 concepts

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4 Topics · CBSE Class 7 Mathematics · 2026-27

Topics in Large Numbers Around Us

1

1. Understanding One Lakh and Related Large Numbers

  • 1 lakh is written as 1,00,000 and has 1 followed by 5 zeroes.
  • 1 crore is written as 1,00,00,000 and has 1 followed by 7 zeroes.
  • 1 million is written as 1,000,000 and is equal to ten lakhs.
2

2. Estimation, Rounding, and Approximation

  • Exact numbers are not always needed; an approximate number is often enough.
  • Saying that Chintamani's population is about 75,000 gives a good idea of its size.
  • Rounding up means the approximate number is more than the actual number.
3

3. Seeing Large Numbers in Real Life

  • The Statue of Unity in Gujarat is the world's tallest statue at about 180 metres.
  • Kunchikal waterfall in Karnataka drops from a height of about 450 metres.
  • Somu is 1 metre tall, and each floor of the building is about four times his height.
4

4. Rapid Counting and Calculator Patterns

  • A +1000 button pressed 100 times makes 1 lakh.
  • A crore is formed when the +1000 button is pressed ten times conceptually from the lakh stage.
  • Using calculator buttons is a way to understand place value.

Key Concepts

Central concept: Understanding, comparing, reading, writing, estimating, and using large numbers in the Indian and American number systems

Meaning of lakh, crore, million, and arabIndian number systemAmerican or international number systemEstimating large numbersComparing large numbers with familiar quantitiesCalculator patterns and shortcutsMultiplication patterns in large numbersLarge-number facts and thought experiments

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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 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 Syllabus

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