Section 1
Sales Tax
Property
The sales tax is a percent of the purchase price.
In this Grade 7 lesson from Illustrative Mathematics Chapter 4, students apply percentages to calculate sales tax and tips in real-world contexts. They practice finding tax rates from given data, computing sales tax using fractional percentages such as 7.5%, and determining total cost as a percent increase of the original price. Students also work backwards from a known tax amount to find an original subtotal, building fluency with proportional reasoning.
Section 1
Sales Tax
The sales tax is a percent of the purchase price.
Section 2
Calculating Tips
A tip (or gratuity) is calculated as a percentage of the subtotal, which is the cost of goods or services before sales tax is added.
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Section 1
Sales Tax
The sales tax is a percent of the purchase price.
Section 2
Calculating Tips
A tip (or gratuity) is calculated as a percentage of the subtotal, which is the cost of goods or services before sales tax is added.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter