In studying this chapter, students will learn the basic concepts of percent. In today's world the concepts of percent is very important and widely used, and therefore it is  necessary to be understood. For example, at a restaurant, when ready to pay for your meal and want to include a tip. Let say the meal costs 60 dollars and you want to give 15% tips, therefore you must know what is 15% . Also, what if you have to pay your mortgage tax, let say 7%, what about the state sales tax, or reading the final stats of a ball game, just to name a few. As you can see, it is very important to master this topic very well. In this chapter, you will learn how to:

Change percent to Decimal

Change decimal to percent

Change fraction to Percent

Change percent to Fraction

Change mixed Number to Percent

Change percent to Mixed Number

Finding percent of a number

Finding what Percent one Number is of Another

Finding a Number when Percent is Known

Finding a Number when Part and Percent are Known

Percent Differential

Percent of increase and  decrease  


Comparing Ratios


Direct proportion

Inverse Proportion