Real World Algebraic Expression

Daniel is setting up rows of chairs for a concert. He decides to put 9 chairs in each row. There are 45 chairs. Let x represent the number of rows of chairs. Which equation can be used to find the number of rows of chairs Daniel sets up?

• 45x = 9

• x + 9 = 45

• x/9 = 45

• 9x = 45

Ms. Smith purchases boxes of crayons for her class. Each box contains 16 crayons. She purchases a total of 192 crayons. Which equation can be used to find how many boxes of crayons she purchases?

• x/16 = 192

• x + 16 = 192

• x - 16 = 192

• 16x = 192

Last weekend, Jeff earned $12 for each lawn he mowed. He paid his brother $10 to pull weeds. Jeff also earned $15 for cleaning out a garage. Let n represent the number of lawns Jeff mowed. Which expression represents this situation?

• 12 + 15 - 10 • n

• 12 - 10 • n + 15

• n • 15 + 12 - 10

• 12 • n + 15 - 10

On Saturday, Wyatt made $15 an hour at his job. That night he spent $22 on dinner and a movie. Which algebraic expression represents his earning and spending for the day?

• 15h - 22

• 15 ÷ h - 22

• 15h + 22

• 15 + h - 22

Liam earns $450 a day. Which algebraic expression represents the amount of money he will earn in d days?

• d ÷ 450

• 450d

• 450 + d

• 450 ÷ d

A coach formed teams of 8 from all the players in a soccer league. There are 14 teams. How many players are in the league?

• 14 = 8 • y

• y ÷ 8 = 14

• (1/8)y = 14

• y = 14 ÷ 8

Kiran scored 223 more points in a computer game than Tyler. If Kiran scored 409 points, how many points did Tyler score?

• 223 = 409 - z

• 409 - 223 = z

• 409 + 223 = z

• 409 = 223 - z

Kiran’s backpack weighs 3 pounds less than Clare’s backpack. Clare’s backpack weighs 14 pounds. How much does Kiran’s backpack weigh?

• x + 3 = 14

• 3x = 14

• x = 14 - 3

• x = 14 ÷ 3