One-Step Equations Word Problems

For a school assembly, 400 6th, 7th, and 8th grade students are present. 175 are 6th graders and 150 are 7th graders. Write an equation to represent the amount of 8th graders.

• x + 225 = 400

• x - 225 = 440

• x + 150 = 175

• x - 150 = 175

George is selling tickets for a fundraiser. So far, he has sold 9 tickets. He has 16 tickets left to sell. How many tickets did he start with?

• t - 9 = 16

• t + 9 = 16

• 9t = 16

• t/9 = 16

Marcus has a part-time job walking dogs. He earns $7 per hour. Write and solve an equation to find the number of hours he has to work to earn $84.

• 7x = 84

• x - 7 = 84

• x + 7 = 84

• x/7 = 84

What is the correct equation for this scenario: Fancyson has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Fancyson needs to save to by the IPOD?

Lake Ontario, which has a depth of 600 feet, is five times as deep as Lake Erie. Write and solve an equation to find the depth of Lake Erie.

• x + 5 = 600

• 5x = 600

• x/5 =600

• x - 5 = 600

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112?

• 14h = 112

• 14 / h = 112

• h + 14 = 112

• h - 14 = 112

If one roll of masking tape costs $1.15, how many rolls can Emma buy  with $5.75?

• 1.15(5.75) = x

• 5.75x = 1.15

• 1.15x = 5.75

• x = 1.15/ 5.75

Andrew has saved $55 toward the purchase of an iPOD. The iPOD costs $145. Which equation represents the amount Andrew needs to save to buy the iPOD?

• x + 55 = 145

• 145x = 55

• 55 - x = 145

• 145 (55) = x

Sally bought three candy bars for a total of $18.00. Which equation can be used to determine the cost for each candy bar?

• 18c=6

• c + 6= 18

• c +18 = 6

• 3c=18

Amy was given an amount of money, m, for a good grades on her report card. She spent $15.00 and now has $25.32. How much money did she get for good grades? Write an equation you could use to solve this problem. Use m as your variable.

• m - 25.32 = 15

• m/25.32

• m - 15 = 25.32

• 15m = 25.32