Percent Problems Worksheet | Discounts, Tax, Tip, & Simple Interest - Unit 1.5! Give your students the real-world math practice they need with this Percent Problems Worksheet! This resource is part of Unit 1.5 in the Ratios, Proportions, and Percents Unit and focuses on solving percent increase, percent decrease, discounts, markups, tax, tip, and simple interest. The worksheet begins with guided practice examples and then moves into independent practice problems that cover multiple percent appli