A ready to go worksheet that builds the students level of learning and understanding of sales tax, tip, discounts, and mark-up. Your students can use the percent key on their calculators or can review how to turn a percent into a decimal to multiply. Worksheet includes DOK Level 1 through Level 3. The last 3 problems ask the students to calculate discount rates and sales tax for two different stores and then to figure out which would be a better deal. Great lesson or practice for students!