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Ratios, Proportions, and Percents

This chapter review focuses on ratios, proportions, and percents. Students will compete in a team challenge, discussing and solving problems to earn points. Scoring rules are explained at the beginning.

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Ratios, Proportions, and Percents

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  1. Ratios, Proportions, and Percents Team Challenge Chapter 6 Review

  2. Ratios, Proportions, and Percents • Rules of the game • No calling out answers • You may discuss the problem with the other members on your team • Raise your hand when you have the answer • I will call on the 1st person to raise their hand • My decisions are final Chapter 6 Review

  3. Ratios, Proportions, and Percents • Scoring • Correct response +1 point • Incorrect response -1 point • Calling out answers -2 points • Challenge puzzles you may risk up to 5 points Chapter 6 Review

  4. Ratios, Proportions, and Percents Let’s Get Started! Chapter 6 Review

  5. Ratios, Proportions, and Percents • This is a comparison of two quantities by division. Ratio Chapter 6 Review

  6. Ratios, Proportions, and Percents • Write the following ratio as a fraction in simplest form. 5 : 30 1/6 Chapter 6 Review

  7. Ratios, Proportions, and Percents • Write the following ratio as a fraction in simplest form. 98 homes in 100 have a TV. 49/50 Chapter 6 Review

  8. Ratios, Proportions, and Percents • A ratio that compares quantities in different units is a Rate Chapter 6 Review

  9. Ratios, Proportions, and Percents • A rate that has a denominator of 1 is a Unit rate Chapter 6 Review

  10. Ratios, Proportions, and Percents You may risk up to five points. If you complete the puzzle you earn what you have risked. If you do not complete the puzzle you lose what you have risked. Captains record your wager now. • Challenge • Puzzle Chapter 6 Review

  11. Ratios, Proportions, and Percents • Write the following ratio as a unit rate. 150 miles in 3 hours 50 mph Chapter 6 Review

  12. Ratios, Proportions, and Percents • Find the unit rate. A six pack of soda costs $2.70. $.45 per soda Chapter 6 Review

  13. Ratios, Proportions, and Percents • A skydiver falls 144 feet in 3 seconds. How many feet does he fall in 1 second? 48 feet per second Chapter 6 Review

  14. 10mi 5280 1hr 1hr 1mile 60min * * 880 ft minute Ratios, Proportions, and Percents • Convert 10 mph to feet per minute. Chapter 6 Review

  15. Ratios, Proportions, and Percents • An equality of two ratios is a proportion Chapter 6 Review

  16. Ratios, Proportions, and Percents • Solve for n 5 n 6 42 = n = 35 Chapter 6 Review

  17. Ratios, Proportions, and Percents • Challenge Puzzle Decide and record your risk amount. Chapter 6 Review

  18. Ratios, Proportions, and Percents • Do the following ratios form a proportion? 4 20 7 35 and yes Chapter 6 Review

  19. 3 3.27 12 x x = $13.08 = Ratios, Proportions, and Percents • Write a proportion and solve. Three cans of soup cost $3.27.Find the cost of 12 cans. Chapter 6 Review

  20. Ratios, Proportions, and Percents • Your team scores 4 runs in the first three innings of a 9-inning baseball game. If it continues at that rate, how many runs will it score in the game? 12 runs Chapter 6 Review

  21. Ratios, Proportions, and Percents • The triangles are similar. Solve for a. 1 a 3 9 a = 3 Chapter 6 Review

  22. Ratios, Proportions, and Percents • A map of the United States has a scale of 1 inch : 250 miles. The cities of Jackson, Mississippi and Carson City, Nevada are 7 inches apart. How many miles is it from Jackson to Carson City? 1750 miles Chapter 6 Review

  23. Ratios, Proportions, and Percents • A model airplane is 1/48 of the airplane’s actual size. The length of the model airplanes wing is ¾ foot. How long is the airplane’s wing? 36 feet Chapter 6 Review

  24. Ratios, Proportions, and Percents • Challenge Puzzle Record your wager. Chapter 6 Review

  25. Ratios, Proportions, and Percents • What is the probability of rolling an even number when rolling two dice? 1/2 Chapter 6 Review

  26. Ratios, Proportions, and Percents • Suppose you select a letter at random from the word Arithmetic. What is the probability of selecting a t? r A i m t h e t i c 1/5 Chapter 6 Review

  27. Ratios, Proportions, and Percents • A bag contains 5 grape lollipops, 6 orange lollipops, 4 root beer lollipops and 5 cherry lollipops. What are the odds in favor of choosing a grape lollipop? 5 to 15 Chapter 6 Review

  28. Ratios, Proportions, and Percents • What is the probability of drawing a red ace from a standard deck of playing cards? 1/26 Chapter 6 Review

  29. Ratios, Proportions, and Percents • What is the complement of an event. All the outcomes not in the event. Chapter 6 Review

  30. Ratios, Proportions, and Percents • If P(green) = 4/27, what is the probability of not green? 23/27 Chapter 6 Review

  31. Ratios, Proportions, and Percents • Challenge Puzzle How much will you risk? Chapter 6 Review

  32. Ratios, Proportions, and Percents • A ratio that compares a number to 100 is a Percent Chapter 6 Review

  33. Ratios, Proportions, and Percents • Convert 1/5 to a percent. 20% Chapter 6 Review

  34. Ratios, Proportions, and Percents • Write 220% as a fraction or mixed number in simplest form. 2 1/5 Chapter 6 Review

  35. Ratios, Proportions, and Percents • Write 4.4% as a decimal. .044 Chapter 6 Review

  36. Ratios, Proportions, and Percents • 20% of x is 30. What is x? 150 Chapter 6 Review

  37. Ratios, Proportions, and Percents • Challenge Puzzle Record your bet. Chapter 6 Review

  38. x 200 100 250 x = 80% = Ratios, Proportions, and Percents • Write a proportion and solve. • A bicycle cost $250 last year. The same bike costs $200 this year. What percent of last year’s cost is this year’s cost? Chapter 6 Review

  39. Ratios, Proportions, and Percents • Write an equation and solve. What is 85% of 62? n = .85 * 62 n = 52.7 Chapter 6 Review

  40. Ratios, Proportions, and Percents • Lydia has read 14 pages of her 22-page reading assignment. To the nearest percent, what percent of the assignment has Lydia read? 64% Chapter 6 Review

  41. Ratios, Proportions, and Percents • Tom pole vaulted 8 foot yesterday. Today he vaulted 20% higher. How many feet did he vault today? 9.6 feet Chapter 6 Review

  42. Ratios, Proportions, and Percents • The space Surveillance Center in Colorado tracks about 8500 objects in orbit around Earth. All but about 500 objects are junk from past space missions. What percent are junk? approximately 94 % Chapter 6 Review

  43. Ratios, Proportions, and Percents • Challenge Puzzle Will you lose or gain? Chapter 6 Review

  44. Ratios, Proportions, and Percents • A video game that regularly sells for $40.00 is on sale for 20% off. What is the sale price? $32.00 Chapter 6 Review

  45. Ratios, Proportions, and Percents • Seventy students voted for Jason, 25% voted for Amanda, and the other 40% voted for Melissa. How many students voted in the election? 200 Chapter 6 Review

  46. Ratios, Proportions, and Percents • The price of a computer was $1099 last year, this year the same computer costs $999. Find the percent change in price. Round to the nearest tenth of a percent. 9.1% Chapter 6 Review

  47. Ratios, Proportions, and Percents • In the United States in the 20th century, average life expectancy increased from about 47 years to about 77 years. Find the percent of increase to the nearest percent. 64% Chapter 6 Review

  48. Ratios, Proportions, and Percents • A rectangle is 55 inches wide and 34 inches long. Is it a golden rectangle? Why or why not. Yes, 55/34  1.618 Chapter 6 Review

  49. Ratios, Proportions, and Percents • Challenge Puzzle The final challenge. What are you willing to risk? Chapter 6 Review

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