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Percentage Basics & Introduction- By Kari Knisely
What you will learn… Where percents come from What percents are What percents look like Common percentages used in eve...
Where Percents Come From Italian roots most commonly assumed
Where did percents come from?Merriam-Webster – click here for more informationEncyclopedia/Merriam-Webster – click here fo...
What Percents are & Basic Info Converts any quantity into a part of 100 to easily compare
What is a Percent?     Per cent      Per 100        ÷ 100   %= parts per 100
Percents as FractionsSteps2.Percentage number becomes numerator3.Denominator becomes 1004.Remove the percent sign5.Simplif...
Percents as DecimalsSteps2.Move decimal 2 places left3.Remove the percent sign4.Re-write decimal75 %           75.0 %     ...
Is more than 100% possible?             200%
Is more than 100% possible?             175%                              75%
What does a percent look like?             %
What does a percent look like?
What does a percent look like?   40 Test Questions = 100% = 1.0
What does a percent look like?   40 Test Questions = 100% = 1.0         50%        50%         20 ?s      20 ?s         0....
What does a percent look like?   40 Test Questions = 100% = 1.0           25%     25%           10 ?s   10 ?s           0....
What does a percent look like?   40 Test Questions = 100% = 1.0             12.5% 12.5%             5 ?s  5 ?s       12.5%...
Common Percentage Types Discounts & Sales Tips Taxes
Common Percentage Types
Common Percentage Types                 Calculate
Common Percentage Types                 Calculate
Common Percentage Types
Common Percentage TypesCalculate
Common Percentage TypesCalculate
Common Percentage Types
Common Percentage Types                    Original     $24.99                    Discount     - 7.50                    S...
Common Percentage Types                    Original     $24.99                    Discount     - 7.50                    S...
Why do we use percents? Compare different quantities
Why do we use percents?Brad’s Math Test        Kim’s Science Test45 questions correct    52 questions correctIF 50 questio...
Why do we use percents?                                               45 ?s                                               ...
Why do we use percents?             Kim’s Science Test             52 questions correct                 IF 60 questions to...
Why do we use percents?                                          45 ?s                                            If 50 to...
Why do we use percents?Brad’s Math Test        Kim’s Science Test45 questions correct    52 questions correctIF 50 questio...
Why do we use percents?Brad’s Math Test        Kim’s Science Test16 questions correct    16 questions correctIF 20 questio...
Why do we use percents?                                              16 ?s   If 20 total ?s0 ?s       5 ?s           10 ?s...
Why do we use percents?             Kim’s Science Test             16 questions correct                 IF 24 questions to...
Why do we use percents?                                       16 ?s    If 20 total ?s0 ?s        5 ?s   10 ?s           15...
Why do we use percents?Brad’s Math Test        Kim’s Science Test16 questions correct    16 questions correctIF 20 questio...
What you have learned… Where percents come from What percents are What percents look like Common percentages used in e...
Works Cited All images retrieved from Google images
Why do we use percents?                                       16 ?s    If 20 total ?s0 ?s        5 ?s   10 ?s           15...
Why do we use percents?                                          45 ?s                                            If 50 to...
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Tutorial1

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  • Can we assume Kim did better than Brad because she got more questions right even though there were different amounts of questions on the tests? ? 100 is an easy number to work with. If we compare the two test scores out of parts per 100 then we can compare them evenly.
  • Can we assume Kim did better than Brad because she got more questions right even though there were different amounts of questions on the tests? ? 100 is an easy number to work with. If we compare the two test scores out of parts per 100 then we can compare them evenly.
  • Can we assume Kim did better than Brad because she got more questions right even though there were different amounts of questions on the tests? ? 100 is an easy number to work with. If we compare the two test scores out of parts per 100 then we can compare them evenly.
  • Can we assume Kim did better than Brad because she got more questions right even though there were different amounts of questions on the tests? ? 100 is an easy number to work with. If we compare the two test scores out of parts per 100 then we can compare them evenly.
  • Transcript of "Tutorial1"

    1. 1. Percentage Basics & Introduction- By Kari Knisely
    2. 2. What you will learn… Where percents come from What percents are What percents look like Common percentages used in everyday life Why we use percents
    3. 3. Where Percents Come From Italian roots most commonly assumed
    4. 4. Where did percents come from?Merriam-Webster – click here for more informationEncyclopedia/Merriam-Webster – click here for more informationMerriam-Webster Dictionary. Retrieved on March, 24 2012 from http://www.merriam-webster.com/dictionary/percent
    5. 5. What Percents are & Basic Info Converts any quantity into a part of 100 to easily compare
    6. 6. What is a Percent? Per cent Per 100 ÷ 100 %= parts per 100
    7. 7. Percents as FractionsSteps2.Percentage number becomes numerator3.Denominator becomes 1004.Remove the percent sign5.Simplify 75 75 25 375 % 100 100 25 4 75 % 3 4
    8. 8. Percents as DecimalsSteps2.Move decimal 2 places left3.Remove the percent sign4.Re-write decimal75 % 75.0 % 75.0 %   0.75
    9. 9. Is more than 100% possible? 200%
    10. 10. Is more than 100% possible? 175% 75%
    11. 11. What does a percent look like? %
    12. 12. What does a percent look like?
    13. 13. What does a percent look like? 40 Test Questions = 100% = 1.0
    14. 14. What does a percent look like? 40 Test Questions = 100% = 1.0 50% 50% 20 ?s 20 ?s 0.50 0.50
    15. 15. What does a percent look like? 40 Test Questions = 100% = 1.0 25% 25% 10 ?s 10 ?s 0.25 0.25 25% 25% 10 ?s 10 ?s 0.25 0.25
    16. 16. What does a percent look like? 40 Test Questions = 100% = 1.0 12.5% 12.5% 5 ?s 5 ?s 12.5% 0.125 0.125 12.5% 5 ?s 5 ?s 0.125 0.125 12.5% 12.5% 5 ?s 5 ?s 0.125 12.5% 12.5% 0.125 5 ?s 5 ?s 0.125 0.125
    17. 17. Common Percentage Types Discounts & Sales Tips Taxes
    18. 18. Common Percentage Types
    19. 19. Common Percentage Types Calculate
    20. 20. Common Percentage Types Calculate
    21. 21. Common Percentage Types
    22. 22. Common Percentage TypesCalculate
    23. 23. Common Percentage TypesCalculate
    24. 24. Common Percentage Types
    25. 25. Common Percentage Types Original $24.99 Discount - 7.50 Sale Price $17.49 FL Tax Rate 6% = ?Calculate
    26. 26. Common Percentage Types Original $24.99 Discount - 7.50 Sale Price $17.49 FL Tax Rate 6% = ?Calculate
    27. 27. Why do we use percents? Compare different quantities
    28. 28. Why do we use percents?Brad’s Math Test Kim’s Science Test45 questions correct 52 questions correctIF 50 questions total IF 60 questions total
    29. 29. Why do we use percents? 45 ?s If 50 total ?s0 ?s 12.5 ?s 25 ?s 37.5 ?s 50 ?s0% 25% 50% 75% 100% ≈ 90% Brad’s Math Test 45 questions correct IF 50 questions total
    30. 30. Why do we use percents? Kim’s Science Test 52 questions correct IF 60 questions total 52 ?s If 60 total ?so ?s 15 ?s 30 ?s 45 ?s 60 ?s0% 25% 50% 75% 100% ≈ 87%
    31. 31. Why do we use percents? 45 ?s If 50 total ?s0 ?s 12.5 ?s 25 ?s 37.5 ?s 50 ?s0% 25% 50% 75% 100% ≈ 90% 52 ?s If 60 total ?s o ?s 15 ?s 30 ?s 45 ?s 60 ?s 0% 25% 50% 75% 100% ≈ 87%
    32. 32. Why do we use percents?Brad’s Math Test Kim’s Science Test45 questions correct 52 questions correctIF 50 questions total IF 60 questions total = 90% = 87%
    33. 33. Why do we use percents?Brad’s Math Test Kim’s Science Test16 questions correct 16 questions correctIF 20 questions total IF 24 questions total
    34. 34. Why do we use percents? 16 ?s If 20 total ?s0 ?s 5 ?s 10 ?s 15 ?s 20 ?s0% 25% 50% 75% 100% ≈ 80% Brad’s Math Test 16 questions correct IF 20 questions total
    35. 35. Why do we use percents? Kim’s Science Test 16 questions correct IF 24 questions total 16 ?s If 24 total ?so ?s 6 ?s 12 ?s 18 ?s 24 ?s0% 25% 50% 75% 100% ≈ 65%
    36. 36. Why do we use percents? 16 ?s If 20 total ?s0 ?s 5 ?s 10 ?s 15 ?s 20 ?s0% 25% 50% 75% 100% ≈ 80% 16 ?s If 24 total ?s o ?s 6 ?s 12 ?s 18 ?s 24 ?s 0% 25% 50% 75% 100% ≈ 65%
    37. 37. Why do we use percents?Brad’s Math Test Kim’s Science Test16 questions correct 16 questions correctIF 20 questions total IF 24 questions total ≈ 80% ≈ 65%
    38. 38. What you have learned… Where percents come from What percents are What percents look like Common percentages used in everyday life Why we use percents
    39. 39. Works Cited All images retrieved from Google images
    40. 40. Why do we use percents? 16 ?s If 20 total ?s0 ?s 5 ?s 10 ?s 15 ?s 20 ?s0% 25% 50% 75% 100% ≈ 80% 16 ?s If 24 total ?s o ?s 6 ?s 12 ?s 18 ?s 24 ?s 0% 25% 50% 75% 100% ≈ 65%
    41. 41. Why do we use percents? 45 ?s If 50 total ?s0 ?s 12.5 ?s 25 ?s 37.5 ?s 50 ?s0% 25% 50% 75% 100% ≈ 90% 52 ?s If 60 total ?s o ?s 15 ?s 30 ?s 45 ?s 60 ?s 0% 25% 50% 75% 100% ≈ 87%
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