1 / 16

Math on the Mind

Math on the Mind. Which is the better deal: 20% off a $240 video game system 15% off a $210 video game system. Percent of Change. Unit 4, Day 9 Mrs. King. Picture from hoffnermath.wordpress.com. Percents Refresher:.

holden
Download Presentation

Math on the Mind

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Math on the Mind Which is the better deal: • 20% off a $240 video game system • 15% off a $210 video game system

  2. Percent of Change Unit 4, Day 9 Mrs. King Picture from hoffnermath.wordpress.com

  3. Percents Refresher: • http://www.brainpop.com/math/ratioproportionandpercent/percents/preview.weml drugstoredivas.net

  4. Vocabulary • Wholesale Price = the price that stores pay for merchandise • Retail Price = the price at which stores sell merchandise • Mark up = an increase in price • Discount = a reduction in price

  5. Formula for percent change: Difference between the “new” and the “original”

  6. Example #1 • An auto mechanic purchases a set of tires at a price of $250 an sells them for $310. What is the percent markup in price? x 310-250 60 250 250x=6000 x=24

  7. Example #2 • A sweater is on sale for 20% off the retail price. If the sweater is priced at $70, what is the sale price? 70 -14 20 x 70 56 100x=1400 x=14

  8. Example #3 • A toy store buys toys at whole sale and issues a markup of 15%. If the store buys a train set for $50, at what price will the store sell the train? 50 + 7.50 15 x 50 57.50 100x=750 x=7.50

  9. Save the Elves

  10. The Booster Club allows a maximum 70% markup for fundraising. If the donuts cost us $.89 apiece, what is the highest price we could charge for the donuts?

  11. Let’s sell the donuts for $1.50 each—it’s easier to make change that way!

  12. The day is coming to an end and we still have some donuts left. We decide to post a sign: What is the new price?

  13. What is the percent increase from the original purchase price to the new selling price?

  14. Extra Practice • “Quiz”: http://www.thegreatmartinicompany.com/percent-percentage/percent-change.html • Rags to Riches: http://www.quia.com/rr/230204.html

  15. Homework Page 171 #1-14 dreamstime.com

More Related