7-7 Percent of a Number and  7-8 The percent Proportion
Turn and Talk <ul><li>What’s your favorite subject in school? </li></ul>
Favorite Subject <ul><li>A graph at the right shows the results of a survey in which 1,016 people were asked their favorit...
Favorite Subject <ul><li>Suppose you pass 50 people at the mall, do you think more or less than 25 of them would choose PE...
Using PROPORTIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </l...
Using EQUATIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </li>...
Example 1 <ul><li>Out of 1,423 adults surveyed, 30% said they knew the name of their mail carrier.  How many of the people...
Example 2 <ul><li>What number is 140% of  32? </li></ul>
Example 3 <ul><li>Find 75% of $800 </li></ul>
Example 4 <ul><li>What number is 120% of 24? </li></ul>
Example 5 <ul><li>Find 25% of $600 </li></ul>
Your Turn Work one with a proportion and one with an equation <ul><li>Fifty percent of 140 is what number? </li></ul><ul><...
Example 6 <ul><li>What percent of $15 is $9? </li></ul>
Example 7  With a partner- set up the proportion on each problem <ul><li>What percent of 6 is 3? </li></ul><ul><li>What nu...
Example 8 <ul><li>What number is 40% of 120? </li></ul>
Example 9 <ul><li>18 is 25% of what number? </li></ul>
Example 10 <ul><li>What percent of 24 is 18? </li></ul>
Example 11 <ul><li>What number is 30% of 150? </li></ul>
Example 12 <ul><li>12 is 80% of what number? </li></ul>
Your Turn <ul><li>What number is 5% of 60? </li></ul><ul><li>80 is 75% of what number? </li></ul>
Journal <ul><li>Which method do you prefer? </li></ul><ul><li>Why? </li></ul>
Homework <ul><li>p 320: 3, 10-18 even, 22  (7 problems) </li></ul><ul><li>p 325: 8-18 even, 21, 24  (8 problems) </li></ul>
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7 7 And 7 8

  1. 1. 7-7 Percent of a Number and 7-8 The percent Proportion
  2. 2. Turn and Talk <ul><li>What’s your favorite subject in school? </li></ul>
  3. 3. Favorite Subject <ul><li>A graph at the right shows the results of a survey in which 1,016 people were asked their favorite subject. </li></ul><ul><li>About how many of them said language? </li></ul><ul><li>How did you estimate? </li></ul>Science Math History Language PE
  4. 4. Favorite Subject <ul><li>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 </li></ul>Science Math History Language PE
  5. 5. Using PROPORTIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </li></ul><ul><li>How many of the students chose science? </li></ul>Science Math History Language PE or
  6. 6. Using EQUATIONS!!! <ul><li>The graphic shows that 12% of the 1,016 students chose science as their favorite subject. </li></ul><ul><li>How many of the students chose science? </li></ul>Science Math History Language PE What does mean? of
  7. 7. Example 1 <ul><li>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 carrier’s name? </li></ul><ul><li>Use a proportion and equation (T-chart) </li></ul>
  8. 8. Example 2 <ul><li>What number is 140% of 32? </li></ul>
  9. 9. Example 3 <ul><li>Find 75% of $800 </li></ul>
  10. 10. Example 4 <ul><li>What number is 120% of 24? </li></ul>
  11. 11. Example 5 <ul><li>Find 25% of $600 </li></ul>
  12. 12. Your Turn Work one with a proportion and one with an equation <ul><li>Fifty percent of 140 is what number? </li></ul><ul><li>Find 37.5% of 64 </li></ul>
  13. 13. Example 6 <ul><li>What percent of $15 is $9? </li></ul>
  14. 14. Example 7 With a partner- set up the proportion on each problem <ul><li>What percent of 6 is 3? </li></ul><ul><li>What number is 50% of 6? </li></ul><ul><li>3 is 50% of what number? </li></ul>
  15. 15. Example 8 <ul><li>What number is 40% of 120? </li></ul>
  16. 16. Example 9 <ul><li>18 is 25% of what number? </li></ul>
  17. 17. Example 10 <ul><li>What percent of 24 is 18? </li></ul>
  18. 18. Example 11 <ul><li>What number is 30% of 150? </li></ul>
  19. 19. Example 12 <ul><li>12 is 80% of what number? </li></ul>
  20. 20. Your Turn <ul><li>What number is 5% of 60? </li></ul><ul><li>80 is 75% of what number? </li></ul>
  21. 21. Journal <ul><li>Which method do you prefer? </li></ul><ul><li>Why? </li></ul>
  22. 22. Homework <ul><li>p 320: 3, 10-18 even, 22 (7 problems) </li></ul><ul><li>p 325: 8-18 even, 21, 24 (8 problems) </li></ul>

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