# Lesson: Find Percent of a Number

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### Lesson Objective

SWBAT find percent of a number

### Lesson Plan

 Standard 6NSO.C13  Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned and tips 6.DASP.2. Construct circle graphs using ratios, proportions, and percentages. Aim/Objective: Key Points ·         SWBAT calculate a percent of a number ·         Percents between 0 and 99 represent parts of a whole ·         Percents above 100% represent more than the whole Assessment: Judith has a total of 8 fish in her aquarium. Exactly 75% of the fish are guppies. How many of the fish in the aquarium are guppies?                         A.        2             B.        5             C.        6             D.        7     A baseball team won 75% of its games. If the team played 48 games, how many games did it win?                         A.        36             B.        25             C.        12             D.        9     What is 40% of 250? A.    50 100 150 200     At the local book store, calendar sales went up 230% from last year.  Last year, there were 50 calendars sold.  How many calendars were sold this year? A.    1.15 B.     11.5 C.     115 D.    1150 Lesson ·         Remind students that fractions, decimals and percents are all different ways to represent the same thing. ·         Percents can be written as decimals by dividing by 100.  This is the same thing as moving the decimal two times to the left. ·         Students will write percents as decimals ·         Walk through reasoning before teaching students how to calculate percent of a number.  ·         If the percent is between 0 and 99 then you are going to have an end result that is less than the number ·         Use the benchmark of 50% to estimate about what your number should be. ·         Walk through the procedure to calculating percents of a number.  ·         First turn the percent into a decimal ·         Then write the equation of multiplying the decimal by number. ·         Check the answer to make sure it makes sense.  ·

### Lesson Resources

 CW Percent of Number   Classwork 5,927 HW Percent of Number   Homework 2,226 Find10 of a number 1,891 Percent of Number Reteach 2,490 Percent of Number prac 1,899 U6 L13 Smooth Operator Percent of a Number 2,313 U6 L13 Smooth Operator Percent of a Number 886

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