Name: Date: Period:

Math 8: One-Step Equations Word Problems (Writing Algebraic Expressions)

Write an expression for each word phrase.

1. a number x divided by 7

3. a number b decreased by 14

5. 12 times the difference of a number r and 7

2. the sum of 10 and a number n

4. the product of a number x and 8

6. 11 minus the product of 5 and a number k

7. a. Grace wants to divide the job of writing x invitations to the party equally among 4 committee

members. Write an expression to determine the number of invitations she will have each committee

member write.

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b. If Grace has 220 invitations for the committee members to how many will she have each

member write?

Write an algebraic expression and use it to evaluate eacm word problem.

8. Arturo purchased a package of 50 blank CDs. After he used x CDs, he had x less than 50 CDs

remaining. How many CDs did he have left after using 31 CDs?

9. At the grocery store, Henry bought c pounds of cashews for $4.99 per pound. If he buys 2 pounds,

how much will they cost?

10. The school library is combining books from two storage unit into a newly designed area for thelibrary. The first original unit held 186 books and the second unit had 307 books. Write and solve anequation to find the number of books in the new area of the library.

11. Amelia wanted to buy a new computer and printer which had a total cost of $ 1099.95. She had saved$389.85 for her purchase. How much more does she need to save to buy the computer and printer shewants?

12. Ashley saves $32 from her weekly paycheck for her college education. This is 1/5 of her weeklysalary. How much does she earn each week? Write and solve an equation to determine the amountAshley earns each week.

13. Hunter bought a package of 24 pencils for $3.12. Write and solve an equation to determine the costof each pencil in the package.

14. Austin High School had an enrollment of 1,428 students. In May, they graduated 418 students. Howmany students are still enrolled in the school?

15. Mr. Otten saved $32 each week for 26 weeks. How much did he save in that time?

16. Jessica baked 10 dozen cookies. She left 1/8 of the baked cookies home and took the rest to schoolfor the bake sale. How many cookies did Jessica take to school?

17. Doug must take 1.25 milliliters of medicine every day. How many days will the medicine last ifDoug was given a prescription of the medicine in a bottle containing 50 milliliters?

Kuta Software - Infinite Pre-Algebra

One-Step Equation Word Problems

1) Lisa is cooking muffins. The recipe calls for

7 cups of sugar. She has already put in 2

cups. How many more cups does she need

to put in?

3) How many packages of diapers can you buy

with $40 if one package costs $8?

O5) Last week Julia ran 30 miles more than

Pranav. Julia ran 47 miles. How many

miles did Pranav run?

7) Amanda and her best friend found some

money buried in a field. They split the

money evenly, each getting $24.28. How

much money did they find?

Name

Date Period

2) At a restaurant, Mike and his three friends

decided to divide the bill evenly. If each

person paid $13 then what was the total bill?

4) Last Friday Trevon had $29. Over the

weekend he received some money for

cleaning the attic. He now has $41. How

much money did he receive?

6) How many boxes of envelopes can you buy

with $12 if one box costs $3?

8) Jenny wants to buy an MP3 player that costs

$30.98. How much change does she receive

if she gives the cashier $40?

9) Last Friday Adam had $22.33. Over the

weekend he received some money for

cleaning the attic. He now has $32. How

much money did he receive?

11) A recipe for cookies calls for 3— cups of

sugar. Amy has already put in 3— cups.

How many more cups does she need to put

513) If the weight of a package is multiplied by—

7

the result is 40.5 pounds. Find the weight

of the package.

10) After paying $5.12 for a salad, Norachai has

$27.10. How much money did he have

before buying the salad?

O

12) Your mother gave you $13.32 with which to

buy a present. This covered — of the cost.

How much did the present cost?

14) A stray dog ate 12 of your muffins. That

was — of all of them! With how many did10

you start?

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