Adding and Subtracting Rational Numbers in Word Problems

Kyle owed his sister $12.45 that he borrowed to go see a movie. He earned $7.50 mowing the neighbor's lawn. How much does Kyle still owe his sister?

• He owes her $19.95.

• He owes her $4.95.

• He owes her nothing.

• He owes her $12.45.

Drake has -$15.50 in his bank account. In order to close his account, Brendan must bring his balance to $0. Describe how Drake can get to a balance of $0.

• Withdraw $15.50.

• Write a check for $15.50.

• Deposit $0.

• Deposit $15.50.

Which real world context could be represented by -2 + 1 + 3?

• A baby's weight decreased by two pounds, increased by one pound, and then increased by three pounds.

• A share of stock decreased by two points, decreased by one point, then increased by three points.

• The temperature increased by two degrees, increased by one degree, and then increased by three degrees.

• A bank statement shows a withdrawal of two dollars, a withdrawal of one dollar, and a deposit of three dollars.

• 21

• 3

• 0

• -11

• -21

• -3

• 0

• 11