Multiplying Decimals is used to figure out interest on investments and the tip you leave for the waitress (waiter). Both of these are usually shown as a percentage. As you know percents are turned into decimals by moving the decimal 2 places.

A recent advertisement claimed that a certain bank was offering 2.4% interest on their Super Savings Accounts. We will calculate simple interest by multiplying by 0.024 (2.4%). Mr. Rafone put $250 into the account. What is the simple interest after one year? 250 * 0.024 =

To find out the total in the account, you multiply by 1 (to keep the principal) and .024 interest. 250 * 1.024 =

Greg put $300 in a savings account that received 1.9% simple interest. (0.019). How much money will he have at the end of the year?

Jamie's grandmother put 75 into a savings account when Jamie was born. The account receives 2.2% simple interest yearly. How much was the account worth on Jamie's 5th birthday?

Gloria used her credit card to buy some new clothes. She bought an outfit for $175. She will pay the interest only for the first 4 months and hopes to use her Christmas money to pay off the debt. If the credit card charges 18% interest (1.5% per month) how much interest will she pay for the first 4 months?

Jennifer does some babysitting on the weekends and every Wednesday Night. She puts $10 into her savings account every month. With a simple interest rate of 2.3% (0.023), how much money will she have after 3 years?