© 2013 Preston PowerPoints Warm UP. © 2013 Preston PowerPoints Warm up Turn each decimal to a percent Round to the nearest tenth 1)0.33345 2)0.44 3)1.206.

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© 2013 Preston PowerPoints Warm UP

© 2013 Preston PowerPoints Warm up Turn each decimal to a percent Round to the nearest tenth 1) )0.44 3)1.206

© 2013 Preston PowerPoints Percent is a part of 100

© 2013 Preston PowerPoints Multiply by places to the right Remember Dr. Pepper or DP

© 2013 Preston PowerPoints 1) ) )1.206

© 2013 Preston PowerPoints Lesson Objectives 1) Find the percent of increase and decrease problems. Next: Solve real-life problems using percents to find the mark up of an item.

© 2013 Preston PowerPoints PercentPercent of Change

© 2013 Preston PowerPoints Your business is expanding. You need to add 7,000 square feet on to the existing 17,500 square feet building. What is the percent increase of the building? Real World Application

© 2013 Preston PowerPoints Definition Percent of change – the amount stated as a percent that a number increases or decreases. Starting = 20 Ending = 40 Percent of change = 100%

© 2013 Preston PowerPoints Definition Percent decrease – a percent change describing a decrease in a quantity. Starting = 12 Ending = 9 Percent decrease = 25%

© 2013 Preston PowerPoints The original amount is greater than the amount of change.

© 2013 Preston PowerPoints Definition Percent increase – a percent change describing a increase in a quantity. Starting = 15 Ending = 33 Percent increase= 120%

© 2013 Preston PowerPoints The original amount is Less than the amount of change

© 2013 Preston PowerPoints or Big – Little Original Amount of change Original Rule Percent of Change x 100 x

© 2013 Preston PowerPoints Find the original amount Identify if the problem is a percent Increase or Decrease Subtract the big amount from the little amount Divide Change to a percent

© 2013 Preston PowerPoints 2) Find the percent of increase or decrease from 40 to 55. Example Amount of change Original – = x % = = 55 40

© 2013 Preston PowerPoints 23 3) Find the percent of increase or decrease from 63 to 42. Example Amount of change Original – = 0.3 = x % = = & 3. A 33% decrease from 63 to 42.

© 2013 Preston PowerPoints 4) Find the percent of increase or decrease from 88 to 16 round to the nearest percent. Example Amount of change Original – = 0.81 = x % = = & A 82% decrease from 88 to 16.

© 2013 Preston PowerPoints Word Problems Beyonce’s new album was listed on iTunes for $ Yesterday it went on sale for $8.00. What is the percent of decrease? = 2 =.20 x % =

© 2013 Preston PowerPoints Your business is expanding. You need to add 7,000 square feet on to the existing 17,500 square feet building. What is the percent increase of the building? Real World Application

© 2013 Preston PowerPoints Always use Key Points & Don’t Forget or Big - Little Original % 100 = part whole % 100 =

© 2013 Preston PowerPoints

The Assignment 4 problems from the blue print

© 2013 Preston PowerPoints

Please with errors, confusing slides, improvements, complications, or any other comments or The template is from Bibliography

© 2013 Preston PowerPoints Thank you for buying my lesson. It is my goal to make products that consumers want to give a 4 star rating to. If you feel that you can not give me a 4 star rating, please leave me a comment in the Q&A section of my store so I can make the appropriate changes before you rate it. Also, if you have an idea of how to improve it I ’ d love to here it. Thank you and good luck! You can see more products & product update at

© 2013 Preston PowerPoints 23 6) Find the percent of increase or decrease from 54 to 30 round to the nearest percent. Whiteboard Practice Amount of change Original – = 0.4 = x % = = & 4. A 44% decrease from 54 to 30. 4

© 2013 Preston PowerPoints 1) A tablet is on sale for $187. The sign says 15% off of the original price. What was the original price of the tablet? Real World Application Price = – = – Discount x Sale Price $ x = x $ x = $ The original price is $220. original price

© 2013 Preston PowerPoints 7,000 17,500 17,500  x x 100 Real World Application 16) What is the percent of increase on the floor space? 7,000  100 = = = x 700,000 17,500x = 17,500 1 O2O2 40% 17,500 x 100 7,000 17,500