lesson
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Imagine you walk into a toy shop with a crisp paper bill in your pocket. How do you know if you have enough money for a toy car and a pack of stickers?
Money uses dollars for big amounts and cents for small coins. A small dot called a decimal point separates the dollars on the left from the cents on the right.
📊Interactive diagram
What happens when you want to buy more than one treat? Let's add them up together.
Adding Your Shopping Bill
To find your total cost, add the dollar parts together first, and then add the cent parts together.
If a juice box costs 1.20∗∗andanapplecosts∗∗0.50, you add 1+0 = 1,and20¢+50¢=70¢.Yourtotalis∗∗1.70**.
📊Interactive diagram
What if you hand the cashier a bill that is bigger than your total bill?
Getting Your Change
When you pay more money than an item costs, the cashier gives you back your extra money, called change.
There are two main strategies to find change: the Counting On method and the subtraction method.
In the Counting On method, you start at the total cost and add up using coin increments until you reach the cash amount paid.