Mrs. Smith has some money in her wallet. She pays to the music teacher $25 on hour for 6 hours of teaching her son. Her husband gives her $110, and she puts the money in her wallet. By how much does the amount in her wallet change?

Bob lost 10 points eight times playing a video game. He lost an additional 50 points for going over the time limit. What was the total change in his score?

Katy pays 6 payments of $8 each to a game store. She returns two items and receives $12 back. What is the change to the amount of money she has?

Mrs. K lost 48 pounds over 8 months. She lost the same amount of weight each month. Write an integer that represents the change in Mrs. K’s weight each month.

Does each person end up with more or less money than she started with? By how much?

(a) Emma spends $32 a day for 4 days.

(b) Emily earns $12 a day for 6 days.

(c) Maggie spends $40 a day for 2 days. Then she earns $25 a day for 5 days.