Practice Exercises: Consumer Math

Money calculator

Directions: Solve each problem below by entering a whole number, a dollar amount with cents, or a percent. If your answer is a percent, do NOT enter the percent symbol. For each exercise below, click once in the ANSWER BOX, type in your answer and then click ENTER. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. To start over, click CLEAR.

1. What percent of 50 is 18?
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2. 16 is 25% of what number?
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3. What is 35% of 210?
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4. In a department store, a pair of pants that regularly sell for $42 is marked, "Save 15%." What is the sale price of the pants? 
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5. Sam owes $12,000 in students loans for college. The interest rate is 8.25% and the loan will be paid off over 6 years. How much will he pay altogether?
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6. Jill put $800 into a savings account that earns 4% in interest. How much will she have after 9 months?
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7. A salesman at Wasteland TV Company sold five color TV sets for a total of $18,990. If his commission is 5.5% of sales, how much did he earn last week?
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8. If the sales tax rate is 8.375% in New York City, then how much would you pay for a pair of shoes in Manhattan that cost $125.00? (Round your answer to the nearest cent.)
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9. Gail works in as an office clerk for $15.00 per hour. If her pay is increased to $18.00, then what is her percent increase in pay?
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10.  At Blue Mountain Middle School, enrollment decreased from 590 students in 2006 to 579 students in 2007. What is the percent decrease in enrollment? (Round your answer to the nearest tenth of a percent.)
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