Using Variables to Solve Real-World Math Problems

A store sells pencils for $0.50 each. If you buy 'x' pencils, how much will you spend? Write an equation to represent the total cost.

• Total Cost = 0.50 * x

• Total Cost = 0.50 + x

• Total Cost = x + 0.50

• Total Cost = 0.50 * (x + 1)

Maria has 'x' marbles. She buys 5 more marbles. Write an equation to express the total number of marbles she has now.

• total = 5x

• total = x + 5

• total = x - 5

• total = x + 10

A car travels 'x' miles every hour. How far will it travel in 't' hours? Write an equation to represent the distance traveled.

• Distance = x * t

• Distance = x / t

• Distance = x - t

• Distance = x + t

A recipe calls for 'x' cups of flour. If you want to make 3 batches, how many cups of flour do you need? Write an equation to find the total flour needed.

• 2x

• 3x

• 4x

• x/3

In a garden, there are 'x' flowers. If 4 more flowers are planted, how many flowers are there now? Write an equation to show this change.

• x + 4

• x + 2

• x * 4

• x - 4

A book costs $15. If you buy 'x' books, how much will you pay in total? Write an equation to represent the total cost of the books.

• Total Cost = 15 * x

• Total Cost = 15 / x

• Total Cost = 15 + x

• Total Cost = 15 - x

A bike can go 'x' miles on one charge. If it is charged 't' times, how far can it go in total? Write an equation to express this distance.

• total distance = x - t

• total distance = x + t

• total distance = t / x

• total distance = x * t

A movie ticket costs 'x' dollars. If you buy 3 tickets, how much do you spend? Write an equation to find the total cost of the tickets.

• Total Cost = 3x

• Total Cost = x + 3

• Total Cost = 3 + x

• Total Cost = 2x

A farmer has 'x' apples. He sells 10 apples. Write an equation to find out how many apples he has left.

• x - 5

• 10 - x

• x + 10

• x - 10

A school has 'x' students. If 15 new students enroll, how many students are there now? Write an equation to represent the total number of students.

• total_students = x * 15

• total_students = x - 15

• total_students = x + 15

• total_students = x / 15