# Introduction

## Whole Numbers of Class 6

### Introduction

The numbers 0, 1, 2, 3, 4, 5, …… are known as whole numbers. We can also define whole numbers as collection of numbers which contains zero and counting numbers / natural numbers (1, 2, 3, 4, 5, ……).  Whole numbers are called non-negative integers.

### Illustration 1:

Does every whole number have a whole number as predecessor as well as successor ?

Sol:      No, 0 has no predecessor as a whole number because 0 – 1 = –1 not a whole number.

But every whole number has its successor

#### Illustration 2:

Write the largest and smallest three digit whole number.

Sol:      Largest three digit number = 999

Smallest three digit number = 100

Face value and place value of whole numbers

N = 12345

5 is unit place digit

4 is ten’s place digit

3 is hundred’s place digit

2 is thousand’s place digit

1 is ten thousand’s place digit

 Face value Place value 5 5 × 1 = 5 4 4 × 10 =  40 3 3 × 100 = 300 2 2 × 1000 = 2000 1 1 × 10000 = 10000