Solving Real-Life One-Step Equations with Inverses

A baker has 12 cookies and gives away some to a friend. If he has 8 cookies left, how many cookies did he give away? Solve the equation: 12 - x = 8.

• 2

• 10

• 4

• 6

Maria bought 3 notebooks and spent $9. If each notebook costs the same amount, how much does one notebook cost? Solve the equation: 3x = 9.

• 2

• 5

• 4

• 3

A gardener has 20 plants and decides to plant some more. If he ends up with 25 plants, how many did he plant? Solve the equation: 20 + x = 25.

• 7

• 5

• 3

• 10

Tom has $50. He spends some money and now has $30 left. How much did he spend? Solve the equation: 50 - x = 30.

• 15

• 25

• 20

• 10

A car travels 60 miles in 1 hour. If it travels for 2 hours, how far does it go? Solve the equation: 60 = 2x.

• 150 miles

• 90 miles

• 100 miles

• 120 miles

A store sells pencils for $0.50 each. If you buy 4 pencils, how much do you spend? Solve the equation: 0.50x = 2.00.

• 3.00

• 1.50

• 2.00

• 0.25

Lily has 15 marbles. She gives away some and now has 10 left. How many marbles did she give away? Solve the equation: 15 - x = 10.

• 3

• 7

• 5

• 10

A book costs $15. If you have $5, how much more do you need to buy the book? Solve the equation: 15 - 5 = x.

• 20

• 15

• 5

• 10

A recipe calls for 2 cups of sugar. If you have 1.5 cups, how much more do you need? Solve the equation: 2 - 1.5 = x.

• 0.5 cups

• 1 cup

• 1.5 cups

• 0.25 cups

A movie ticket costs $12. If you have $20, how much change will you get after buying the ticket? Solve the equation: 20 - 12 = x.

• 5

• 10

• 15

• 8