Expressions and Equations Word Problems

We often use a letter such as or as a placeholder for a number in expressions. These are called __________ (just like the letters we used in equations, previously).  ____________make it possible to write expressions that represent a calculation even when we don't know all the numbers in the calculation. 

• equations

• coefficients

• variables

• solutions

Tags

CCSS.6.EE.A.2B

Select ALL the equations that describe each situation and then find the solution.

There are 2 answers.

Tyler's playlist has 36 songs. Noah’s playlist has one quarter as many songs as Tyler's playlist. How many songs are on Noah’s playlist?

Tags

CCSS.HSA.CED.A.3

Diego finished 8 math problems on his test. This is 40% of the test. How many questions are on the test? What equation would help us to solve this?

• 8% of 40 = x

• 40% of 8 = x

• 40% of x = 8

Which equation best represents each situation?

• 5x = 20

• After Elena ran 5 miles on Friday, she had run a total of 20 miles for the week. She ran x miles before Friday.

• x + 5 =20

• Andre’s school has 20 clubs, which is five times as many as his cousin’s school. His cousin’s school has x clubs.

• 20x = 5

• Jada volunteers at the animal shelter. She divided 5 cups of cat food equally to feed 20 cats. Each cat received x cups of food.

Tags

CCSS.6.EE.B.7

Aleena went to the mall last week and spent $205. -She bought a pair of pants for $65 -She bought 1 necklace for $ 15 -She spent the rest of the money on shoes. Which equation can be used to find s, the amount of money she spent on shoes?

• A. 205 = s + 65 + 15

• B. 205 = s - 65 - 15

• C. 205 = s + 65 - 15

• D. 205 = s x 65 + 15

Tags

5.4.B

Tickets to the aquarium cost $27 per person. Write an expression to represent the total cost of tickets for a group of people. Let n represent the number of people in the group.

• 27 + n

• 27n

• 27/n

• 27 - n

Tags

CCSS.HSA-SSE.A.1A

There were x cookies at the beginning of a party. By the end of the party, 16 of them had been eaten. Using x, write an expression for the number of cookies that were left.

• 16

• x + 16

• 16 - x

• x - 16

Tags

CCSS.HSA-SSE.A.1A

Sheryl earns money for college by walking dogs and by mowing lawns. She earns $3  for each dog she walks and $25 for each lawn she mows. Which expression can be used to determine the amount of money, in dollars, Sheryl earns from walking w dogs and mowing m lawns?

• 3w + 25m

• 28(m + w)

• 3w + 25

• 75(w + m)

Tags

CCSS.6.EE.B.6

A cell phone company charges $40 per month plus a $35 activation fee. What is the expression for the total cost for m months?

• 40 - 35m

• 40m - 35

• 40m + 35

• 40 + 35

Tags

CCSS.HSF.LE.B.5

Mary baked some cookies on Saturday. On Sunday she baked twice as many cookies as the day before. If c represents the number of cookies she made on Saturday, write an expression for the number of cookies she made on Sunday.

• c + 2

• c - 2

• c / 2

• 2c

Tags

CCSS.6.EE.B.6