One-Step Equations Word Problems

In 2010, a tree was 8 feet tall. In 2011 the tree was 14 feet tall. Which equation would be used to find how many feet the tree grew?

• f + 8 = 14

• f - 8 = 14

• f/8 = 14

• 8f=14

Sally bought three candy bars for a total of $18.00. How much did each candy bar cost? Write an equation to solve this problem. Use c as your variable.

• 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

Working together, Joy and Steve collected 53 pounds of aluminum cans for recycling. If Joy collected 20 pounds, find the number of pounds, x, that Steve collected. Using x as your variable write an equation to solve.

• 20x=53

• x-20=53

• x-53=20

• x+20=53

Tyrell has saved $62 to buy a new phone. How many more dollars must Tyrell save if the cost of the phone is $89? Let d be the number of dollars Tyrell must still save?

• 62 + d = 89

• 62d = 89

• d ÷ 89 = 62

• d - 62 = 89

Which is the solution to the problem: A lawn care service charges $50 for each acre they mow. If they earned $450, how many acres did they mow?

• a = 400

• a = 500

• a = 9

• a = 5

After paying $5.12 for a salad, Rhiannon has $27.10. How much did she have before buying the salad?

When a mixed number is decreased by 6 ¼, the result is 9 ⅜. What is the mixed number? Let m be the mixed number that is being decreased.

• m - 6 ¼ = 9 ⅜

• m + 6 ¼ = 9 ⅜

• 6 ¼ · m = 9 ⅜

• m ÷ 6 ¼ = 9 ⅜

An express delivery company charges by the pound. A package that weighed 5 pounds cost $24.50 to overnight. Write an equation to find how much the delivery company would charge to overnight a package that weighed 1 pound.

• 5 + c = 24.50

• c - 5 = 24.50

• 5c = 24.50

• c/5 = 24.50