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Chapter Summary

Double Century

CBSE · Class 3 · Mathematics

Summary of Double Century for CBSE Class 3 Mathematics. Key concepts, important points, and chapter overview.

44 questions64 flashcards5 concepts

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Overview

Double Century explains how numbers are written, counted, and built using place value. It begins with the old ways of counting, then shows the importance of the symbol 0, the use of 0 to 9 for writing any number, and the idea of making 100 in different ways. It also shows how numbers move beyond 100

Key Concepts

People first kept records by making

People first kept records by making marks on cave walls and tree barks. Later, they used groups of 5, 10, 20, and 60 to count and record things.

Ancient Indians created a method

Ancient Indians created a method to write any number using only ten symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

0 means nothing

0 means nothing, but it is very important in writing numbers correctly. It helps make the number system work properly.

100 can be made in different

100 can be made in different ways, such as 70 and 30, 65 and 35, or 60 and 40. These are all pairs that add up to 100.

A number can be split into

A number can be split into hundreds, tens, and ones. For example, 150 has 1 hundred, 5 tens, and 0 ones.

Learning Objectives

  • Understand how people counted in early times using marks and groups.
  • Learn why the symbol 0 is important in writing numbers.
  • Recognize that ten symbols, 0 to 9, can write any number.
  • Make 100 in different ways using number jumps and bundles.
  • Write numbers from 101 to 110 using hundreds, tens, and ones.

Frequently Asked Questions

What are the important topics in Double Century for CBSE Class 3 Mathematics?
Double Century covers several key topics that are frequently asked in CBSE Class 3 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Double Century — CBSE Class 3 Mathematics?
Understand the core concepts first, then work through the 44 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.

More resources for Double Century

All 14 chapters — CBSE Class 3 Mathematics Chapter Summary

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