Solving One-Step Equations with Rational Numbers

A store sells pencils for $0.75 each. If you buy x pencils and spend $3.00, how many pencils did you buy? Solve for x.

• 2

• 5

• 6

• 4

Maria has $12.50. She spends y dollars on a book. If she has $7.50 left, how much did she spend? Solve for y.

• 6.50

• 7.00

• 5.00

• 4.00

A recipe calls for 2.5 cups of flour. If you have x cups and use 1.5 cups, how much flour do you have left? Solve for x.

• 1.0 cups

• 0.5 cups

• 2.0 cups

• 3.0 cups

The temperature was 5 degrees Celsius in the morning. If it drops by d degrees and the final temperature is -3 degrees, what is d? Solve for d.

• 8

• -5

• 10

• 5

A tank can hold 15 liters of water. If it currently has w liters and you add 4 liters, how much water is in the tank now? Solve for w.

• 10

• 12

• 11

• 9

A book costs $8. If you have b dollars and want to buy the book, how much money do you have left after the purchase? Solve for b if you start with $20.

• 12

• 5

• 15

• 10

A gardener has 10 plants. If he gives away g plants to a friend, how many plants does he have left? Solve for g if he has 6 plants remaining.

• 7

• 4

• 5

• 2

A box contains x chocolates. If you eat 3 chocolates and have 5 left, how many chocolates were in the box originally? Solve for x.

• 8

• 10

• 3

• 5

A runner completes a race in 30 minutes. If he runs at a speed of s miles per hour, how far is the race? Solve for s if the distance is 10 miles.

• 15 miles per hour

• 30 miles per hour

• 20 miles per hour

• 25 miles per hour