Math In Daily Life

My topic is about Grocery Stores.
I chose this topic because you use alot of math in grocery stores.
Math is used in this topic because there might be sales on food, you use coupons and you want to find out the sale price. At the cash registar you count out money to give to the cashier,
Math is useful in this topic because you need to kno how much money you have, and you need to kno how much money to give the cashier.

Ex:
If a 12-pack of coke is $5.23 and you have a coupon for $2 off, the that means the price of the 12 pack of coke is going to be $3.23.