7.4 Practice Day 2

In this Practice Day, students practice what they’ve learned so far in this unit, with extra attention on topics from the more recent lessons.

By Desmos Classroom

Learning goals: Learning Goals • Determine and use a constant of proportionality to solve problems involving fractional quantities. (Lesson 2) • Determine an unknown in a proportional relationship using a table. (Lesson 3) • Determine the new amount given the original amount and a percent increase or decrease. (Lesson 4, Lesson 6) • Use equations to represent situations involving a percent increase or decrease. (Lesson 5) • Use double number lines to represent situations involving a percent increase or decrease. (Lesson 6) • Calculate the original amount given the new amount and a percent change for one-step and multistep percent problems. (Lesson 7) • Calculate the original amount, the new amount, or the percent change in the context of sales tax and tip, including situations that involve multiple percent increases or decreases (e.g., sales tax and a discount). (Lesson 8) • Use proportional relationships and percent change to analyze an issue in society. (Lesson 9) • Explain that percent error is error as a percentage of the correct measurement. (Lesson 11)