Class 6 • Mathematics • Chapter 2
Whole Numbers
Learn about whole numbers, their number line, successors, predecessors and important properties used in mathematical calculations.
Learn the Basics
Important Concepts
Build a strong foundation with these concepts.
Natural Numbers
Understand the counting numbers and their relationship with whole numbers.
Whole Numbers
Learn about whole numbers and their representation on a number line.
Successor
Find the number that comes immediately after a given whole number.
Predecessor
Find the number that comes immediately before a given whole number.
Number Line
Represent and compare whole numbers using a number line.
Properties of Whole Numbers
Explore important properties of addition and multiplication.
Understand with Examples
Worked Examples
Successor
Example
125
Successor = 125 + 1 = 126
Predecessor
Example
125
Predecessor = 125 - 1 = 124
Addition
Example
245 + 155
= 400
Quick Notes
Remember These Points
- • Whole numbers include 0 and all natural numbers.
- • The successor of a whole number is obtained by adding 1.
- • The predecessor of a positive whole number is obtained by subtracting 1.
- • 0 is the smallest whole number.
- • Whole numbers can be represented on a number line.
Practice
Practice Questions
Write the first ten whole numbers.
Find the successor of 9,999.
Find the predecessor of 10,000.
Represent 7 on a number line.
Find the sum of 2,345 and 5,678.
Check whether 25 + 40 is equal to 40 + 25.
Test Yourself
Revise the chapter and test your understanding with a quiz.