Contents INTRODUCTION CHAPTER 1 THE BEGINNINGS OF ARITHMETIC 10 CHAPTER 2 ADDITION 18 CHAPTER 3 SUBTRACTION 28 CHAPTER 4 MULTIPLICATION 35 CHAPTER 5 DIVISION 42 CHAPTER 6 REPEAT AFTER ME 51 60 62 CONCLUSION GLOSSARY FOR MORE INFORMATION FOR FURTHER READING INDEX 64 68 70
Introduction magine a world without numbers How would someone tell time determine how far it is to drive to a concert in the next city find the total cost of a new smartphone or figure out a bank balance and the interest it has earned Numbers are part of daily life Arithmetic is the science of calculating with numbers People use numbers to measure time distance monetary values and more Rather than being a course in arithmetic this resource focuses on its operations Consider several goals of a high school student like making a budget planning to pay for college and keeping track of job earnings All these goals require arith metic Budgets involve adding income and subtracting expenses Finding the cost of college means subtracting financial aid from a school's sticker price Calculating a bank balance with job wage deposits and interest may use all six basic operations of arithmetic The six operations are addition sub traction multiplication division raising to powers and finding roots An example of raising to powers is the use of scientific notation This notation is a simplified way to write very small or very large numbers such as expressing distances in the solar sys tem or the number of acres in a town One
INTRODUCTION sees the use of finding roots in geometry For example given the volume of a cube the length of a side of the cube is found with finding roots Arithmetic also encompasses one to one correspondence Putting on shoes is an exam ple of one to one correspondence There is one foot that corresponds or goes with one shoe Making muffins also involves one to one correspondence Bakers put one muffin liner When making muffins or cupcakes the baker puts a muffin liner in each cup of the muffin tin which is an example of one to one correspondence elenaburn Shutterstock com
