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Splash Screen. Lesson 6 Contents. Obj. #1: Compute mentally with percents Example 1 Find Percent of a Number Mentally Obj. #2: Estimate with percents Example 2 Estimate Percents Example 3 Use Estimation to Solve a Problem. Lesson 6 Contents. Practice and apply

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  1. Splash Screen

  2. Lesson 6 Contents Obj. #1: Compute mentally with percents Example 1Find Percent of a Number Mentally Obj. #2: Estimate with percents Example 2Estimate Percents Example 3Use Estimation to Solve a Problem

  3. Lesson 6 Contents Practice and apply Obj. #1: Compute mentally with percents 13-25 odd (alt. 13, 17, 21, 25) Obj. #2: Estimate with percents 27-35 odd, 39 (alt. 27, 31, 35) Maintaining Your Skills 47-60

  4. Think: . Think: of 46 is 23. Example 6-1a Obj. #1: Compute mentally with percents Find 50%of46 mentally. Answer: 50% of 46 is 23.

  5. Think: . Think: of 88 is 22. Example 6-1b Obj. #1: Compute mentally with percents Find 25%of88 mentally. Answer: 25% of 88 is 22.

  6. Think: . Think: of 110 is 11.So, of 110 is 77. Example 6-1c Obj. #1: Compute mentally with percents Find 70%of110 mentally. Answer: 70% of 110 is 77.

  7. Example 6-1d Obj. #1: Compute mentally with percents

  8. Example 6-1d Obj. #1: Compute mentally with percents Find the percent of each number mentally. a. 50% of 82 b. 25% of36 c. 80%of60 Answer: 41 Answer: 9 Answer: 48

  9. 22% is about 20% or . of 500 is 100. Example 6-2a Obj. #2: Estimate with percents Estimate 22% of 494. 494 is about 500. Answer: 22% of 494 is about 100.

  10. 63% is about 60% or . of 800 is 480. Example 6-2b Obj. #2: Estimate with percents Estimate 63% of 788. 788 is about 800. Answer: 63% of 788 is about 480.

  11. Estimate of 1219. 1219 is almost 1200. of 1219 is about or 3. Answer: Example 6-2c Obj. #2: Estimate with percents 1% of 1200 is 12.

  12. Example 6-2d Obj. #2: Estimate with percents Estimate 155% of 38. 155% means about 150 for every 100 or about 15 for every 10. 38 has about 4 tens. Answer: 155% of 38 is about 60.

  13. Move the decimal point1 place to the left. 10% of $21 is $2.10. 5% is one half of 10%. 5% of $21 is $1.05. So, 15% is about or $3.15. Example 6-3a Obj. #2: Estimate with percents MoneyA restaurant bill totals $21.35. You want to leave a 15% tip. What is a reasonable amount for the tip? $21.35 is about $21. Answer: A reasonable amount for the tip would be $3.

  14. Example 6-2e Obj. #2: Estimate with percents

  15. a. Estimate 38% of 400. b. Estimate 72% of 318. c. Estimate of 2482. d. Estimate 183% of 93. Example 6-2e Obj. #2: Estimate with percents Answer: 160 Answer: 210 Answer: 5 Answer: 162

  16. Example 6-3b Obj. #2: Estimate with percents MoneyA restaurant bill totals $59.05. You want to leave a 15% tip. What is a reasonable amount for the tip? Answer: A reasonable amount for the tip would be $9.

  17. End of Lesson 6

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