Percentages, decimals, and equivalent fractions are all very helpful tools in running a business—even a store in the mall! This informative title introduces readers to percentages, teaching them the basics of the concept of percentage and how to calculate them. Percentages can also be written as decimals or fractions! Children will learn how to use all three and convert them back and forth through helpful mathematical charts, engaging practice problems, STEM themes, an accessible glossary, and easy-to-read text!