Calculating Sales Tax and Discounts
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can calculate the final price of an item after sales tax or a discount.
Part 1 of 4
Warm-up video
Khan Academy · 5:48Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
To calculate sales tax, convert the sales tax percentage into a decimal and multiply it by the price of the item.
- 2
To find the final price, add the sales tax amount to the original price of the item.
- 3
Another method to find the final price is to multiply the original price by 1 plus the sales tax rate in decimal form, such as 1.06 for a 6% tax.
Part 3 of 4
Practice
3 questions
A video game costs $45. If the sales tax is 7%, what is the amount of sales tax you will pay?
A shirt is priced at $25, and there is a discount of 20%. What is the sale price of the shirt?
Part 4 of 4
Exit ticket
Quick comprehension check
“A bicycle costs $249.99, and the sales tax is 5%. What is the final price of the bicycle?”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson

