7 7 and 7 8

Download 7 7 And 7 8

Post on 25-Jun-2015

183 views

Category:

Technology

5 download

Embed Size (px)

TRANSCRIPT

  • 1. 7-7 Percent of a Number and7-8 The percent Proportion

2. Turn and Talk

  • Whats your favorite subject in school?

3. Favorite Subject

  • A graph at the right shows the results of a survey in which 1,016 people were asked their favorite subject.
  • About how many of them said language?
  • How did you estimate?

Science Math History Language PE 4. Favorite Subject

  • Suppose you pass 50 people at the mall, do you think more or less than 25 of them would choose PE as their favorite subject?Explain

Science Math History Language PE 5. Using PROPORTIONS!!!

  • The graphic shows that 12% of the 1,016 students chose science as their favorite subject.
  • How many of the students chose science?

Science Math History Language PE or 6. Using EQUATIONS!!!

  • The graphic shows that 12% of the 1,016 students chose science as their favorite subject.
  • How many of the students chose science?

Science Math History Language PE What doesmean? of 7. Example 1

  • Out of 1,423 adults surveyed, 30% said they knew the name of their mail carrier.How many of the people surveyed knew their mail carriers name?
  • Use a proportion and equation (T-chart)

8. Example 2

  • What number is 140% of32?

9. Example 3

  • Find 75% of $800

10. Example 4

  • What number is 120% of 24?

11. Example 5

  • Find 25% of $600

12. Your Turn Work one with a proportion and one with an equation

  • Fifty percent of 140 is what number?
  • Find 37.5% of 64

13. Example 6

  • What percent of $15 is $9?

14. Example 7With a partner- set up the proportion on each problem

  • What percent of 6 is 3?
  • What number is 50% of 6?
  • 3 is 50% of what number?

15. Example 8

  • What number is 40% of 120?

16. Example 9

  • 18 is 25% of what number?

17. Example 10

  • What percent of 24 is 18?

18. Example 11

  • What number is 30% of 150?

19. Example 12

  • 12 is 80% of what number?

20. Your Turn

  • What number is 5% of 60?
  • 80 is 75% of what number?

21. Journal

  • Which method do you prefer?
  • Why?

22. Homework

  • p 320: 3, 10-18 even, 22(7 problems)
  • p 325: 8-18 even, 21, 24(8 problems)