Rates & Percents

WhiteBlackHispanic Total People Living in Poverty 26,038,0009,393,0009,132,000 Total People in U.S. 238,000,00038,028,00041,698,000 Percent of People Living in Poverty by Race 10.9% 24.7% 21.9%

What is a percent? What does it mean to have, for example, 30% of something?

If I have a Pizza with 100 slices, how many slices is 30% ? Insert image

If I have a Pizza with 10 slices, how many slices is 30% ? Insert image

If I have a Pizza with 5 slices, how many slices is 30% ? Insert image

Definitions Rate - a measure, quantity or frequency measured against some other quantity or measure –45 miles per hour –2/3 cup of milk –97 people per 100,000 Percent - the rate, number, or amount in each 100

To calculate a percent (Method 1) 100 = Part Whole % Part 100 = % Whole

Find 27% of 262 = Part Whole % 100 x

x 100 = x = = 100 x = 70.74

To calculate a percent (Method 2 - only works when you’re trying to find the part) Part 100 = % Whole 100 % Whole Part =

Find 27% of x = x = x =

x 27 = Find 27% of 262

What is 37% of 40? What is 40% of 37? Part = % Whole 100 x = x = x = 14.8 Part = % Whole 100 x = x = x = 14.8