Class 6 • Mathematics • Chapter 1
Knowing Our Numbers
Learn how numbers are read, written, compared and represented. Build a strong foundation for working with large numbers.
Learn the Basics
Important Concepts
Start with these important ideas from the chapter.
Numbers in Everyday Life
Understand how large numbers are used in real-life situations.
Comparing Numbers
Learn how to compare numbers using their place values.
Place Value
Understand ones, tens, hundreds, thousands and higher places.
Indian Number System
Learn the Indian system of writing and reading large numbers.
International Number System
Understand the international system of numeration.
Estimation
Learn how to estimate numbers and calculations.
Understand with Examples
Worked Examples
Expanded Form
Example
45,678
= 40,000 + 5,000 + 600 + 70 + 8
Place Value
Example
3,75,421
Place value of 7 = 70,000
Quick Notes
Remember These Points
- • Place value depends on the position of a digit in a number.
- • Numbers can be compared by checking their highest place values first.
- • Expanded form represents a number as the sum of its place values.
- • Estimation helps us obtain an approximate value quickly.
Practice
Practice Questions
Write 5,67,890 in words.
Arrange 45,678, 54,876 and 46,578 in ascending order.
Find the place value of 7 in 3,75,421.
Round 8,764 to the nearest hundred.
Write 7,05,032 using expanded form.
Test Yourself
Complete a chapter quiz after studying the concepts and examples.