Digits, Grade 7, Volume 1, Homework Helper

9-2: TEKS Practice

  • 1.

    • a. Find the sales tax to complete the table.

    • b. Find the total cost of the item.

  • 2. Find the commission to complete the table.

  • 3. Last month, a salesperson at a car dealership sold $205,000 worth of cars. The commission rate is 5%. How much did the salesperson earn last month in commission?

  • 4. A salesperson at a jewelry store earns 3% commission each week. Last week, Heidi sold $720 worth of jewelry.

    • a. How much did she make in commission?

    • b. How much did the jewelry store make from her sales?

  • 5. A salesperson works 40 hours per week at a job where he has two options for being paid. Option A is an hourly wage of $19. Option B is a commission rate of 8% on weekly sales. How much does he need to sell this week to earn the same amount with the two options?

  • 6. The sales tax rate in a city is 9%.

    • a. Find the sales tax charged on a purchase of $600.

    • b. Then find the total cost.

  • 7. Mental Math A typical tip in a restaurant is 15% of the total bill. If the bill is $140, what would the typical tip be?

  • 8. Reasoning A salesperson's commission rate is 4%.

    • a. What is the commission from the sale of $33,000 worth of furnaces?

    • b. Suppose sales would double. What would be true about the commission? Explain without using any calculations.

  • 9. The Stock Market Nadia is a stockbroker. She earns 4% commission each week. Last week, she sold $7,200 worth of stocks.

    • a. How much did she make last week in commission?

    • b. If she averages that same amount each week, how much did she make in commission in 2011?

  • 10. Error Analysis Andrew and Cori start a new sales job. They have two options for being paid. Option A is an hourly wage of $7.50, working 40 hours a week. Option B is a commission of 6% on the weekly sales, estimating $3,600 in sales per week for an entry-level salesman. Andrew says he'll take the commission, thinking he'll make $2,160.

    • a. What was Andrew's likely error in computing the commission rate?

      • A. He incorrectly converted the percent to a decimal.

      • B. He used the equation, commission rate = commission · sales amount.

      • C. He used the equation, sales amount = commission rate · commission.

      • D. He used the equation, commission equals . fraction commission . , rate , over sales , , amount end fraction

    • b. Which option gives Cori more earnings per week?

      • A. Option A

      • B. Option B

      • C. Both options generate the same amount of earnings.


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Table of Contents

Digits, Grade 7, Volume 1, Homework Helper Unit A: Number and Operations Unit B: Expressions, Equations, and Relationships Unit C: Measurement and Geometry Unit D: Proportionality English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties