Learning about taxes is ripe with opportunities to practice math involving percents. This three-tiered application problem set can be used to differentiate or scaffold the learning. Level 1 -- Percents, plus order of operations work on FICA taxesLevel 2 -- Read a receipt, determine what items are subject to sales tax, and think about the intersection of sales tax and income level when it comes to a household budgetLevel 3 -- Calculate to determine whether it's worthwhile to drive across state l