# Chapter 1: Whole numbers

## 1.1 Introduction

Natural numbers are those numbers that we use for counting. The set of whole numbers includes all the natural numbers along with zero.

In this chapter, we will begin by revising whole numbers and the ways of grouping and classifying them. We will also be working with different properties of operations with numbers. To see how whole numbers are used in real life, we will solve some word problems involving these numbers.