Percentages Review: Nov. 7-8

​Part I: Changing between Fractions, Decimals, & Percents

​Part II: Using the Percent Proportion Formula

1) What percent of 50 is 35? ​

Another way to find the percent is to divide 35 (is) by 50 (of).

​2) Why is 60 120% of 50?

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3) 40% of 70 is?

4) 70% of 40 is? ​

5) 15% of 60 is? When finding the part, you can often multiply the two numbers in your head.

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6) 15 is 25% of what number?

7) 4 is 5% of what number? ​

8) 72 is 120% of what number?

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​Part III: Solving Real World Problems

1) You are buying a gift for a friend and make a 20% down payment, which amounts to

$32.00.   What is the total cost of the gift?

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2) You are hosting a party for 25 guests. Each person will receive a whole roasted chicken for the main course.  If only 16 guests show, what percent of the chicken will not be eaten?

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3)​ On a test with 125 questions, your score was 88%. How many questions did you miss?

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​Part IV: Percent Change Formula

​When tracking the same data over time (price, population, weight, height, etc.), use the percent change formula.

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1) By eating right and exercising, Ray Ray went from 312 pounds to 178 pounds. What was the percent change in his body weight?

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2) ​By eating junk and doing nothing, Jay Jay's weight went from 178 lbs. to 312 lbs. What was the percent change in Jay Jay's body weight?

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3) The cost of a weekend movie ticket this year is $6.50. Last year, , the same ticket cost $5.75.  What is the percent change in the cost of the ticket?

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