In this lesson, students consolidate what they have learned over the last few lessons. They solve a variety of multi-step percentage problems involving taxes, tips, discounts, and commissions, including problems involving fractional percentages. The main activity uses the Information Gap routine. To obtain all the necessary information, students need to persevere in asking questions (MP1) and to communicate precisely (MP6).

The last activity is optional because it provides an opportunity for additional practice with finding the percentage of the increase or decrease.