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Grade 7 Math · Tax, Discounts and Simple Interest

Grade 7 Tax, Discounts and Simple Interest Practice Test

Build Grade 7 Math skills with five 10-question practice tests on sales tax, discounts, combined price changes, and simple interest.

Tax, Discounts and Simple Interest Practice Tests

These Grade 7 Math practice tests help students apply percentages to purchases and financial situations. Students work with sales tax, discounts, original and final prices, combined discount-and-tax calculations, and simple interest.

Skills covered

  • Finding sales tax and total purchase costs
  • Calculating discounts and sale prices
  • Applying a discount and tax in the correct order
  • Finding an original price, tax rate, or discount rate
  • Using the simple-interest formula I = Prt
  • Finding principal, rate, time, interest, and total amount

How to use these practice tests

Convert each percentage to a decimal before multiplying. Apply a discount to the original price first, then calculate tax on the discounted price when the problem gives both. For simple interest, use I = Prt, where P is the principal, r is the annual rate as a decimal, and t is time in years.

For more Grade 7 Math practice, return to the Grade 7 Math category.

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Grade 7 Tax, Discounts and Simple Interest Practice Tests

A 10-question Grade 7 Math practice test on sales tax, discounts, combined price changes, and simple interest.

Convert percentages to decimals, apply tax or discount to the correct price, and use the simple-interest formula I = Prt when appropriate.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

A $100 item receives a 20%20\% discount and then 5%5\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: A

The correct answer is $84.00.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: First find the sale price: 100⋅0.80=80100\cdot0.80=80. Then add tax: 80⋅1.05=8480\cdot1.05=84 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

First find the sale price: 100⋅0.80=80100\cdot0.80=80. Then add tax: 80⋅1.05=8480\cdot1.05=84 dollars.

2. QuestionMultiple choice

An $80 item receives a 10%10\% discount and then 8%8\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: B

The correct answer is $77.76.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 80⋅0.90=7280\cdot0.90=72. The taxed total is 72⋅1.08=77.7672\cdot1.08=77.76 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 80⋅0.90=7280\cdot0.90=72. The taxed total is 72⋅1.08=77.7672\cdot1.08=77.76 dollars.

3. QuestionMultiple choice

A $250 item receives a 30%30\% discount and then 6%6\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: C

The correct answer is $185.50.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 250⋅0.70=175250\cdot0.70=175. The taxed total is 175⋅1.06=185.50175\cdot1.06=185.50 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 250⋅0.70=175250\cdot0.70=175. The taxed total is 175⋅1.06=185.50175\cdot1.06=185.50 dollars.

4. QuestionMultiple choice

A $120 item receives a 25%25\% discount and then 10%10\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: D

The correct answer is $99.00.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 120⋅0.75=90120\cdot0.75=90. The taxed total is 90⋅1.10=9990\cdot1.10=99 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 120⋅0.75=90120\cdot0.75=90. The taxed total is 90⋅1.10=9990\cdot1.10=99 dollars.

5. QuestionMultiple choice

A $64 item receives a 15%15\% discount and then 5%5\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: A

The correct answer is $57.12.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 64⋅0.85=54.4064\cdot0.85=54.40. The taxed total is 54.40⋅1.05=57.1254.40\cdot1.05=57.12 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 64⋅0.85=54.4064\cdot0.85=54.40. The taxed total is 54.40⋅1.05=57.1254.40\cdot1.05=57.12 dollars.

6. QuestionMultiple choice

A $200 item receives a 12.5%12.5\% discount and then 8%8\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: B

The correct answer is $189.00.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 200⋅0.875=175200\cdot0.875=175. The taxed total is 175⋅1.08=189175\cdot1.08=189 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 200⋅0.875=175200\cdot0.875=175. The taxed total is 175⋅1.08=189175\cdot1.08=189 dollars.

7. QuestionMultiple choice

A $50 item receives a 20%20\% discount and then 10%10\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: C

The correct answer is $44.00.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 50⋅0.80=4050\cdot0.80=40. The taxed total is 40⋅1.10=4440\cdot1.10=44 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 50⋅0.80=4050\cdot0.80=40. The taxed total is 40⋅1.10=4440\cdot1.10=44 dollars.

8. QuestionMultiple choice

A $300 item receives a 15%15\% discount and then 7%7\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: D

The correct answer is $272.85.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 300⋅0.85=255300\cdot0.85=255. The taxed total is 255⋅1.07=272.85255\cdot1.07=272.85 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 300⋅0.85=255300\cdot0.85=255. The taxed total is 255⋅1.07=272.85255\cdot1.07=272.85 dollars.

9. QuestionMultiple choice

A $90 item receives a 25%25\% discount and then 8%8\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: A

The correct answer is $72.90.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 90⋅0.75=67.5090\cdot0.75=67.50. The taxed total is 67.50⋅1.08=72.9067.50\cdot1.08=72.90 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 90⋅0.75=67.5090\cdot0.75=67.50. The taxed total is 67.50⋅1.08=72.9067.50\cdot1.08=72.90 dollars.

10. QuestionMultiple choice

A $240 item receives a 20%20\% discount and then 5%5\% tax on the sale price. What is the final cost?

Please select an answer first.

Correct answer: B

The correct answer is $201.60.

  1. Identify the values and rate: Separate the original price or principal from the tax, discount, interest rate, and time information.
  2. Apply the appropriate formula: The sale price is 240⋅0.80=192240\cdot0.80=192. The taxed total is 192⋅1.05=201.60192\cdot1.05=201.60 dollars.
  3. Check the result: Estimate the percentage of the original amount and confirm that the result is reasonable.

The sale price is 240⋅0.80=192240\cdot0.80=192. The taxed total is 192⋅1.05=201.60192\cdot1.05=201.60 dollars.

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Frequently asked questions about Grade 7 Tax, Discounts and Simple Interest

What topics are covered?

The page covers sales tax, discounts, final and original prices, combined price changes, simple interest, rates, principal, time, and total amount.

What formula is used for simple interest?

Use I = Prt, where I is interest, P is principal, r is the annual interest rate written as a decimal, and t is time in years.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 7 Tax, Discounts and Simple Interest questions in total.