PA RT

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The World of Numbers

Welcome to the world of numbers! Any study of mathematics begins with numbers. Your sense of
how much, how many, and how big or small is critical to the work you do in math, as well as to
your understanding the environment in which you function.
The world of numbers is a wide world. In this part, you’ll look at the areas of it we visit most
often, but you won’t have time to explore every corner of the world. Think of this as a tour to get
acquainted with numbers. You’ll learn to communicate in mathematical language and accomplish
basic tasks. You’ll learn the fundamental rules and relationships of our number system.