Daily Percentages Use

-Calculating a grade

-MONEY

-Leaving a tip at a restaurant

-Sales and Discounts

-Commission

-Sales Tax and Interest

Basic Percentage Facts

-Percent = "Per 100" always out of 100

Percents and Decimals:

-Percent to Decimal (divide by 100%)

-Decimal to Percent (multiply by 100%)

Percents and Fractions:

-Percent to Fraction (write over 100%)

-Fraction to Percent (divide numerator by denominator and multiply by 100%)

Using Percents

To find the percent of a number or amount you need to:

1. Write the percent as a decimal (divide by 100%)

2. Multiply by the resulting number by the amount

Calculating a Tip Amount

Example: You are out to eat with your family at a restaurant. The total bill was $42.50. If you want to leave a 20% tip, how much money should you leave?

Calculating Grades

How to find your percentage of a grade:

-Take the points you earned (top number), divide by the total points possible (bottom number), and multiply by 100%

Example: You took a Math test and scored 37 points out of 50. What is your percentage?

DISCOUNT TIME

Example: You go to Mississippi Fried and buy food that costs $50. You have a coupon for 15% off. How much will you have to pay after the discount?