Student Edition - Mathematics in Context - Britannica

Dear Student,This unit is about the ways in which fractions, decimals, and percentsare related.Do you purchase items that need to be weighed? How is the finalprice determined? Calculating per unit prices and total pricesrequires multiplication with fraction and decimal numbers.Do you buy your favorite items on sale? Next time you shop, noticethe sale discount. Sale discounts are usually expressed in percents.In this unit, you will use fractions and percents to find sale prices.You can use models like a double number line, a percent bar, or aratio table to help you make calculations.You will investigate the percent by which a photograph increases ordecreases in size when you enlarge or reduce it on a photocopier.You will also use fractions and percents to describe survey results.While working on this unit, look for ads that list discounts in percentsand newspaper articles that give survey results. Share what you findwith the class.All the situations in this unit will help you perfect your operationswith fractions, decimals, and percents. Good luck.Sincerely,The Mathematics in Context Development TeamWeightin Kilogramsvi More or Less