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IN THIS CHAPTER

Identifying the Big Four operations (addition, subtraction, multiplication, and division)

Adding larger numbers with and without carrying

Subtracting larger numbers with and without borrowing

Multiplying with one-digit and multiple-digit multipliers

Knowing how to do long division step by step

The operations of addition, subtraction, multiplication, and division are at the heart of arithmetic. I call them the Big Four operations.

In this chapter, the focus is exclusively on these four operations. To begin, I discuss each of the Big Four operations in turn. Then, I show you how to add, subtract, multiply, and divide larger numbers.

Even if this information isn’t new to you, make sure that you know it before moving on to the chapters that follow. In Chapter 4, I discuss negative numbers, which depend heavily on the operation of subtraction. And then in Chapter 5, you discover a variety of more advanced Big Four topics that I expand upon in later chapters of the book.