Writing Expressions

Mr. Marcin is making bags of prizes. He has 92 prizes and splits them evenly into b bags. Which expression represents how many prizes are in each bag?

There were 47 frogs in a pond. f of the frogs hopped away. Choose the expression that represents the number of frogs left in the pond.

There are r rows of chairs with 8 chairs in each row. Choose the expression that represents the total number of chairs.

Jordan makes 100 dollars each week. He worked for x weeks this summer.  Write an expression to represent how much money Jordan made this summer.

Ben has x dollars. Cam has 7 fewer dollars than Ben.  Which expression shows how much money Cam has?

Sa ran a race at 5 miles an hour. The race took him x hours to complete. How can I express how many hours he ran?

• 5 ÷ x

• 5 + x

• 5x

• x + 5

Giselle used a $20 bill to pay for a notebook that only costs x dollars. How much money would she get back?

• 20x

• 20 ÷ x

• 20 + x

• 20 - x

Jeff bought x number of games for $32.50 each. He paid with a $100 bill. Which expressions represents the amount Jeff received back from the cashier?

• 32.5 + x - 100

• 100 - 32.5x

• 32.5x - 100

• 100x + 32.5

Ben had "x" dollars. Cam has 7 fewer dollars than Ben.  

How much money does Cam have? Write your answer as an expression.

A man earns x dollars per year. He works 50 weeks during the year. Which expression represents how much he earns each week?

• 50 + x
• 50x
• x ÷ 50
• 50 ÷ x