### Mathematics Class VI

Knowing Our Numbers
Whole Numbers
Playing With Numbers
Basic Geometrical Ideas
Fractions
Integers
Decimals
Data Handling
Mensuration
Algebra
Ratio and Proportion
Practical Geometry
Symmetry

# Introduction

Whole numbers are the set of natural numbers incorporating with .  is the smallest whole number. Whole numbers are

All- natural numbers are whole numbers, yet all whole numbers are not natural numbers.

Predecessor and Successor

• A successor of any number is the following number to it, which is acquired by adding .
• A predecessor of any number is the past number to it, which is acquired by taking away .

For example, predecessor and successor of the number  is and which is  and .

We will also learn about number line and operations performed on number line.

A number line is a representation of all the real number. The distance between all the different points is known as unit distance.

We need to understand different properties of whole number to be able to solve certain types of sums:

• Closure property:- This property tells us how whole numbers are closed under addition and multiplication.
• Commutative property:- This property tells us how we can add and multiply whole numbers in any order.
• Associative property :-
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