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PERCENT OF A NUMBER

PERCENT OF A NUMBER. Your Percent Proportion:. %_ 100. Is_____ Of. =. PRACTICE – PERCENT OF A NUMBER. WHAT IS 5% OF 44? Last semester, 85% of Mrs. Edmondson’s class made the honor roll. If there are 40 total students in her class, how many made the honor roll?

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PERCENT OF A NUMBER

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  1. PERCENT OF A NUMBER

  2. Your Percent Proportion: %_ 100 Is_____ Of =

  3. PRACTICE – PERCENT OF A NUMBER • WHAT IS 5% OF 44? • Last semester, 85% of Mrs. Edmondson’s class made the honor roll. If there are 40 total students in her class, how many made the honor roll? • 80 IS 40% OF WHAT NUMBER? • 220 IS 20% OF WHAT NUMBER?

  4. PRACTICE 80 IS 40% OF WHAT NUMBER? A TV station has 12 minutes of commercials using 20% of it’s air time. What is the total amount of air time used by the TV Station?

  5. PRACTICE – PERCENT OF A NUMBER WHAT % OF 36 IS 9? On a math test, 8 out of 15 students received an A. What percent made an A?

  6. PRACTICE – PERCENT OF A NUMBER James got 25% of the problems on his test incorrect. If there were 24 problems on his test, how many problems did he get wrong? How many did he get correct? Tanya got 23 out of 25 problems correct on her test. What percent of the problems were correct? What percent were NOT correct?

  7. PRACTICE – PERCENT OF A NUMBER • On a math test, Miranda got 17 out of 20 questions correct. What percent did she get correct? • 75% of what number is 21? • What is the percent of change if 40 is increased to 50? • What is the percent of change if 36 is decreased to 24?

  8. PRACTICE – PERCENT OF A NUMBER • Last semester, 75% of Mrs. Edmondson’s class made the honor roll. If there are 30 total students in her class, how many made the honor roll? 2) James got 23 out of 25 problems correct on his test. What percent of the problems were correct? What percent were NOT correct? • What is the percent of change if 115 is decreased to 46? • What is the percent of change if 26 is increased to 65?

  9. PRACTICE SOLVE EACH: 3. WHAT % OF 36 IS 9? 4. WHAT NUMBER IS 40% OF 90?

  10. PRACTICE – PERCENT OF A NUMBER • Mr. Morris’ class had to vote on what type of pizza they liked best. 65% liked pepperoni, 10% liked sausage, and 15% liked cheese. The rest of the class liked supreme. What percent of the class liked supreme? • 1% of what number is 3? • 10% of 1500 is what number?

  11. HOMEWORK CHECK --- WKST. P 120 • 50 • 84 • 150 • 54 • 75 • 90 • 25 • 24 • 28 • 75 • 80 • 40 • 64 • 108 • 36 • 24

  12. PRACTICE BEFORE QUIZ • Safe Side bank pays an interest rate of 8% a year. How much money must be put into an account to earn $60 in a year? • The human body is 60% oxygen, 20% carbon, and 5% hydrogen. The rest is other elements. What percent is composed of the other elements?

  13. A Video game costs $55.How much is the discount and new price in the following situations? • 5% off • 15% off • 20% off • 30 % off

  14. WARM-UP 1/9/09 • Skateboards are on sale at Susan’s Skateshop for 30% off. If the regular price is $89, what is the discounted price? • A video game is $60 at Wal-mart. If Kelly receives a 5% discount, what will Kelly pay for the game? • Last semester, 150 out of 600 students made the honor role. What percent made the honor role?

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