Using Variables to Represent Numbers

Using Variables To Represent Numbers

Introduction

Variables are symbols, usually letters, that represent numbers. Using variables helps you write mathematical relationships clearly, especially when a value is unkn...

Jack reached the dog show early. He already had his own ticket and planned to buy tickets for his group of 6 friends, but he did not know how many of them would actually come.

Each ticket costs 12 dollars, so he wanted a way to check whether he had enough money.

To do this, he used a variable—the letter t—to represent the unknown num...