Questions

Solve for the unknown variable in the first twelve problems by using the inverse property.

1) Solve for “n”.

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2) Solve for “y”.

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3) Solve for “x”.

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4) Solve for “t”.

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5) Solve for “c”.

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6) Solve for “x”.

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7) Solve for “m”.

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8) Solve for “x”.

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9) Solve for “c”.

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10) Solve for “y”.

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11) Solve for “m”.

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12) Solve for “x”.

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13) Jessica purchased a 600-minute pre-paid phone card and called her sister at college. After talking to her sister "t" minutes, she had less than 600 minutes on her calling card. (a) Write an equation to determine the number of minutes remaining on the card. (b) Now, suppose she talked to her sister for 65 minutes, determine how many minutes she has left on her card.

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14) Lance's bowling score was 28 pins more than Jim's score. Lance's bowling score was 205. (a) Write an equation to determine Jim's score (j), (b) What was Jim’s score?

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15) Vanessa solved 244 problems in a recent Mathathon. She solved four times as many problems as her friend Bethany. (a) Write a math sentence to determine the number of problems (p) Bethany solved. (b) How many problems did Bethany solve?

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A formula for finding the gas mileage of a car is shown below. Apply the formula to the next two problems when solving for the gas mileage (s), the number of miles driven (m), and the number of gallons of gas used (g).

16) Darren travels 375 miles and uses 15 gallons of gas. What is the gas mileage (mpg) of his vehicle?

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17) Jane uses 16 gallons of gas and the gas mileage of her vehicle is 20 mpg. How many miles did she drive?

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Review

18) What is the scientific notation for 42,600? State the letter of the correct answer.

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19) What is the scientific notation for 587,000,000? State the letter of the correct answer.

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20) Express the scientific notation in standard form.

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21) Express the scientific notation in standard form.

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22) A local church is raising funds to purchase a new organ. The church budget includes $16,422.00 set aside for the cost of the organ, but the music committee must plan more ways to raise the additional money needed to pay for the cost of the organ, $24,545.00. Explain why the clerk should estimate when reporting the need to the church congregation, but should be accurate when writing a check to the organ company for the payment of the organ.

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23) While filing a tax return, the neighbor found a mistake on her forms provided by her employer. Explain why it is important for her to have the exact numbers when correcting the mistake.

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24) Find the sum and write the answer in standard form.

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25) Express the scientific notation in standard form.

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26) Express the scientific notation in standard form.

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27) Identify the number as integer, rational, and/or irrational. There may be more than one answer.

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28) Identify the number as integer, rational, and/or irrational. There may be more than one answer.

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29) Find the difference and write the answer in standard form.

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30) Consider the cost of building a house. If you are the builder, name two items that the cost could be estimated.

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31) Consider the cost of raising a family. Name two items in a family budget that could be cut if finances become limited.

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32) Find the product and write the answer in standard form.

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33) Find the product and write the answer in standard form.

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34) Find the quotient and write the answer in standard form.

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35) Evaluate.

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36) Evaluate.

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37) Evaluate.

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38) Evaluate.

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39) Using estimation find the square root to the nearest hundredth.

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40) Using estimation find the square root to the nearest hundredth.

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41) Write a decimal that names the same amount as the given mixed number.

a.) 1.35

b.) 1.53

c.) 1.6

d.) 13.5

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