You have a meal at a restaurant and decide to leave the server a 10 percent tip. The meal was $22.47

You have a meal at a restaurant and decide to leave the server a 10 percent tip. The meal was $22.47. How much is the tip?


The way to solve this is to realize 10% means move the decimal point one space left:
10% of 22.47 = 2.247
Rounded to 2 decimal points for currency, we have $2.25