Multiply and Divide Rational Numbers

Devon mows lawns for his summer job. He charges $9.25 an hour. If he spends 6 hours each weekend for the next three weekends mowing lawns, how much money will he earn in all?

• $333.00

• $55.50

• $166.50

• $129.50

There were 576 applicants to the Fine Arts magnet school in the city. Of those applicants, 3/8 were accepted into the program. How many of the applicants were accepted into the program?

• 171

• 216

• 282

• 360

All of the calendars at the bookstore are on sale this weekend for $5.75. If Joanne bought $149.50 worth of calendars this weekend for gifts, how many calendars did she buy?

• 23 calendars

• 26 calendars

• 28 calendars

• 32 calendars

The serving size for Adam's favorite cereal is 2/3 cup. How many servings of cereal would there be for a large box of cereal that holds 16 cups?

• 32 servings

• 24 servings

• 26 servings

• 48 servings

The girls made 90 brownies for a school party. They put walnuts in 3/5 of the brownies. Of the brownies that had walnuts, 1/3 of those brownies had white chocolate chips in them. How many brownies had both walnuts and white chocolate chips?

• 18 brownies

• 54 brownies

• 28 brownies

• 36 brownies

Daniel has a large container of hardwood boards to use for new flooring in his living room. He will need 18 rows of boards in each row. If each board measures 6.84 square feet, how many square feet of boards will Daniel need for the living room?

• 123.12 square feet

• 386.8 square feet

• 424.08 square feet

• 492. 492.48 square feet

Michael is traveling from San Francisco to Houston this morning. The flight will take 4 3/10 hours to complete. If the airplane travels 368.8 miles per hour, how many miles will the airplane travel?

• 1432.8 miles

• 1585.84 miles

• 1406.36 miles

• 1543.62 miles

The girls went to the state fair and bought 2/3 of a pound of fudge. They ate 1/4 of their fudge during th state fair and saved the rest for later. What fraction of a pound of fudge did they eat at the fair?

• 1/6 of a pound

• 1/3 of a pound

• 1/2 of a pound

• 3/8 of a pound

The bakery uses 2/15 of a bag of sugar for each cake that it makes. If the bakery uses 4/5 of a bag of sugar today to make cakes, how many cakes will it be able to make?

• 4 cakes

• 6 cakes

• 7 cakes

• 8 cakes

The prom committee is washing cars for a fundraiser. They made $833.64 on Saturday over a six-hour period of time. If they made an equal amount of money each hour, how much money did they make each hour washing cars?

Record your answer in the space provided.

Mathematical Equivalence

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