Math Word Problems into Expressions

Matthew is 3 times older than Brian. If x represents Brian’s age, which expression represents the combined age of Matthew and Brian?

• 3x

• 3x + x

• x + 3

• x + x + 3

For a walk-a-thon a sponsor committed to give you a flat fee of $5 plus $2 for every mile m you walk. Write an expression for the total amount you will collect from your sponsor at the end of the walk-athon.

• 5+2

• 5+2m

• 5m+2

• 5-2m

• 2m-5

Rhonda was organizing photos in a photo album. She took 60 photos and divided them evenly among p pages. Which algebraic expression represents the number of photos on each page? What are the important parts of this problem that can help you write an algebraic expression?

• 60 photos

• This is an algebra problem

• The phrase, "divided them evenly" lets me know which operation to use.

• Her name is Rhonda

• p stands for the pages

Kelly has some money she has already saved. After mowing two lawns on Saturday, she adds $40 to her savings. How much money has Kelly saved altogether? Let s represent the amount of money she already has in savings.

• s + 40

• 40s

• 40 - s

• 40/s

Tyrell has a sister that is y years younger than him. If Tyrell is 12 years old, how old is his sister? Which algebraic expression could be used to find the age of Tyrell's sister?

• y - 12

• 12 / y

• 12 + y

• 12 - y

Pizzazz Publications is having some books printed. The printer charges $800 plus $5 per book. What equation could help me find how many books can be printed for $4,000?

• 800 + 5x = 4000

• 800x + 5 = 4000

• 4000 + 5x= 800

• 800 + 5 = 4000

Mr. Piper's plumbing needed repairs. The plumber charged $98 for parts plus $45 per hour for labor. If the bill totaled $458, how could I find out the hours of labored required?

• 98x + 45 = 458

• 98 + 45x = 458

• 45 + 98 = 458

• 45x - 98 = 458

Kevin Hart's son is saving money to buy a new shirt that costs $153.66, including tax. He does a talent show at his middle school to earn some money. He charged $9.85 per ticket. Determine whether Kevin Hart's son could use each expression to find the number of tickets he will have to sell to earn enough money to buy the shirt. Organize these options into the right categories:

Groups:

(a) Yes

,

(b) No

To solve word problems, you must know the four operations in math and how to identify each one to address word problems properly. Match the correct operation with the corresponding word problem identifier.

• 
  Go lower one time, by a specific value.

• Addition

• Go higher one time, by a specific value.

• Multiplication

• Repeated Addition

• Division

• Repeated Multiplication

• Subtraction

• Repeated Subtraction

• Exponent

Dumitru has 4 boxes of cookies. Each box has 6 rows of cookies with 9 cookies in each row. Which expression can be used to find the number of cookies that Dumitru has?

• 9 x (4 + 6)

• 4 x 6 x 9

• 4 x (6 + 9)

• 4 x 6 + 9

Answer explanation

If you visualize each box, you will see an array of cookies with 7 rows of 9 cookies in each. Making arrays means we will be multiplying to find out how many cookies are in one box. If she has 4 boxes of these cookies, we can ten multiply the number of cookies in one box by 4 boxes.