📝 Practice Worksheets
Sales Tax - Grand Total Calculating Sales Tax Calculating Simple Interest Percent Increase and Sales Tax
🛠️ Related Tool
🔑 Key Concepts
- Sales tax is a percent added to the cost of an item.
- To find the tax only, multiply the cost by the tax rate.
- To find the total bill, you must include the original cost.
- The total percent is found by adding 100% and the tax percent.
- For example, an 8% tax means you are paying 108% of the original price.
✏️ Worked Examples — Calculating Sales Tax and the Grand Total
🧠 Math Vocabulary
- Sales tax: A percent added to the price of goods or services.
- Tax rate: The percent used to calculate the tax.
- Grand total: The final amount paid after tax is added.
- Percent increase: When an amount becomes larger by a percent.
💡 Main Idea
When calculating a total bill that includes sales tax, remember that you are paying the original 100% of the price plus the tax percent. Adding these together gives the total percent to multiply by.
📚 What You Should Already Know
Students should know how to convert percents to decimals and multiply decimals by whole numbers or other decimals.
🚀 What Comes Next
Next, students will apply percent increase concepts to discounts, tips, interest, and real-world financial situations.