Create Equations from Word Problems Using Variables

1. Sarah has some apples. If she buys 5 more apples, she will have 12 apples. Write an equation to find out how many apples Sarah had originally. Let x be the number of apples Sarah had.

• 10

• 3

• 5

• 7

2. Tom is 3 years older than his sister. If his sister is y years old, write an equation to express Tom's age in terms of y.

• Tom's age = 2y + 3

• Tom's age = y + 5

• Tom's age = y - 3

• Tom's age = y + 3

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

• total cost = 15 + x

• total cost = 15 - x

• total cost = 15 / x

• total cost = 15 * x

4. There are 20 students in a class. If x students are boys, how many girls are there? Write an equation to express the number of girls in terms of x.

• x + 20

• x - 20

• 20 - 2x

• 20 - x

5. A car travels 60 miles per hour. If it travels for t hours, write an equation to find the distance traveled by the car.

• distance = 60t

• distance = 60/t

• distance = 60t^2

• distance = 60 + t

6. Lisa has twice as many stickers as her friend. If her friend has s stickers, write an equation to express how many stickers Lisa has.

• L = s + 2

• L = s

• L = 3s

• L = 2s

7. A pizza has 8 slices. If you eat e slices, how many slices are left? Write an equation to represent the remaining slices.

• 8 - 8

• 8 + e

• e - 8

• 8 - e

8. A farmer has x cows and 5 more cows than sheep. Write an equation to express the number of sheep in terms of x.

• s = x - 10

• s = x - 5

• s = x

• s = x + 5

9. A box can hold 10 toys. If you have y boxes, write an equation to find out how many toys you can store in total.

• total_toys = 10 - y

• total_toys = 10 / y

• total_toys = y + 10

• total_toys = 10 * y

10. If a train leaves the station at 2 PM and travels for h hours, write an equation to find out what time the train will arrive at its destination.

• Arrival Time = 2 PM + h hours

• Arrival Time = 2 PM - h hours

• Arrival Time = h hours after 2 PM

• Arrival Time = 2 PM + 60 minutes