Maria Nguyen Danny Jacobs

 A calculated “central” value of a set of numbers.  Sum of a list of numbers divided by the size of the list.  Can be used to refer to the median and mode  Also known as the mean

John drove for three hours at a rate of 50 miles per hour and two hours at 60 miles per hour. What is the average speed for the whole journey? (hint Distance= Rate x Time) 3 50 mph 2 60 mph total miles total hours entire trip

The average age of Mr. and Mrs. Smith four years ago was 28 years. If the current average age of Mr. and Mrs. Smith and their son is 22 years, what is the age of their son? 4 yrs agotoday A = Mrs. Smith B = Mr. Smith C = Son agestoday

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 What does percentage mean? PERCENT through or for everyhundred  Example: 20 percent of 80 dollars

 How are percentages used?

In a basketball tournament, Sally took 20 shots and scored on 55% of them. After she took 5 more shots, she raised her percentage to 56%. How many of the last 5 shots did she make? 25 shots last 5 shots 20 shots shots made

Miki has a dozen oranges of the same size and a dozen pears of the same size. Miki can extract 8 oz. of pear juice from 3 pears and 8 oz. of orange juice from 2 oranges. She makes a pear- orange juice blend from an equal number of pears and oranges. What percent of the blend is pear juice? 6 pears6 oranges 6 pears = 16 oz6 oranges = 24 oz percent pear juice