Real-Life Equations: Identifying Variables & Writing Equations

Maria has 5 apples. She buys x more apples. Write an equation to represent the total number of apples Maria has.

• total_apples = 5 - x

• total_apples = 5 * x

• total_apples = 5 / x

• total_apples = 5 + x

A book costs $12. If Sarah has y dollars, write an equation to find out how much more money she needs to buy the book.

• y / 12

• 12 + y

• 12 - y

• y - 12

Tom has 3 times as many marbles as Jerry. If Jerry has m marbles, write an equation to express the number of marbles Tom has.

• 2 * m

• m + 3

• 3 * m

• m - 3

A pizza has 8 slices. If Lisa eats s slices, write an equation to find out how many slices are left.

• slices_left = 8 * s

• slices_left = 8 + s

• slices_left = 8 / s

• slices_left = 8 - s

The total cost of 4 notebooks is $20. Write an equation to find the cost of one notebook.

• $5

• $2

• $10

• $8

A car travels at a speed of 60 miles per hour. If it travels for t hours, write an equation to find the total distance traveled.

• distance = 60 + t

• distance = 60t^2

• distance = 60/t

• distance = 60t

Emma has b balloons. If she gives away 2 balloons, write an equation to find out how many balloons she has left.

• b - 2

• b / 2

• b - 1

• b + 2

A box contains 10 chocolates. If x chocolates are eaten, write an equation to find out how many chocolates remain in the box.

• 10 * x

• x - 10

• 10 - x

• 10 + x

A farmer has 15 cows and wants to buy c more cows. Write an equation to represent the total number of cows he will have.

• Total Cows = 15 + c

• Total Cows = 15 / c

• Total Cows = 15 * c

• Total Cows = 15 - c

If a train leaves the station at 3 PM and travels for h hours, write an equation to find out what time the train will arrive at its destination.

• 3 PM - h hours

• 3 PM + 2h hours

• 3 PM + h hours

• 3 PM + 60 minutes