2. Chapter 6 Review1 Ratios, Proportions, and Percents Team Challenge

3. Chapter 6 Review2 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 1 st person to raise their hand –My decisions are final

4. Chapter 6 Review3 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

5. Chapter 6 Review4 Ratios, Proportions, and Percents Let’s Get Started!

6. Chapter 6 Review5 Ratios, Proportions, and Percents This is a comparison of two quantities by division. Ratio

7. Chapter 6 Review6 Ratios, Proportions, and Percents Write the following ratio as a fraction in simplest form. 5 : 30 1/6

8. Chapter 6 Review7 Ratios, Proportions, and Percents Write the following ratio as a fraction in simplest form. 98 homes in 100 have a TV. 49/50

9. Chapter 6 Review8 Ratios, Proportions, and Percents A ratio that compares quantities in different units is a Rate

10. Chapter 6 Review9 Ratios, Proportions, and Percents A rate that has a denominator of 1 is a Unit rate

11. Chapter 6 Review10 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

12. Chapter 6 Review11 Ratios, Proportions, and Percents Write the following ratio as a unit rate. 150 miles in 3 hours 50 mph

13. Chapter 6 Review12 Ratios, Proportions, and Percents Find the unit rate. A six pack of soda costs $2.70. $.45 per soda

14. Chapter 6 Review13 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

15. Chapter 6 Review14 Ratios, Proportions, and Percents Convert 10 mph to feet per minute. 10mi 5280 1hr 1hr 1mile60min ** 880 ft minute

16. Chapter 6 Review15 Ratios, Proportions, and Percents An equality of two ratios is a proportion

17. Chapter 6 Review16 Ratios, Proportions, and Percents Solve for n 5 n 642 = n = 35

18. Chapter 6 Review17 Ratios, Proportions, and Percents Challenge Puzzle Decide and record your risk amount.

19. Chapter 6 Review18 Ratios, Proportions, and Percents Do the following ratios form a proportion? 4 20 7 35 and yes

20. Chapter 6 Review19 Ratios, Proportions, and Percents Write a proportion and solve. Three cans of soup cost $3.27.Find the cost of 12 cans. 3 3.27 12 x x = $13.08 =

21. Chapter 6 Review20 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

22. Chapter 6 Review21 Ratios, Proportions, and Percents The triangles are similar. Solve for a. 3 9 1 a a = 3

23. Chapter 6 Review22 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

24. Chapter 6 Review23 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

25. Chapter 6 Review24 Ratios, Proportions, and Percents Challenge Puzzle Record your wager.

26. Chapter 6 Review25 Ratios, Proportions, and Percents What is the probability of rolling an even number when rolling two dice? 1/2

27. Chapter 6 Review26 Ratios, Proportions, and Percents Suppose you select a letter at random from the word Arithmetic. What is the probability of selecting a t? 1/5 A r i t h m e t i c

28. Chapter 6 Review27 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

29. Chapter 6 Review28 Ratios, Proportions, and Percents What is the probability of drawing a red ace from a standard deck of playing cards? 1/26

30. Chapter 6 Review29 Ratios, Proportions, and Percents What is the complement of an event. All the outcomes not in the event.

31. Chapter 6 Review30 Ratios, Proportions, and Percents If P(green) = 4/27, what is the probability of not green? 23/27

32. Chapter 6 Review31 Ratios, Proportions, and Percents Challenge Puzzle How much will you risk?

33. Chapter 6 Review32 Ratios, Proportions, and Percents A ratio that compares a number to 100 is a Percent

34. Chapter 6 Review33 Ratios, Proportions, and Percents Convert 1/5 to a percent. 20%

35. Chapter 6 Review34 Ratios, Proportions, and Percents Write 220% as a fraction or mixed number in simplest form. 2 1/5

36. Chapter 6 Review35 Ratios, Proportions, and Percents Write 4.4% as a decimal..044

37. Chapter 6 Review36 Ratios, Proportions, and Percents 20% of x is 30. What is x? 150

38. Chapter 6 Review37 Ratios, Proportions, and Percents Challenge Puzzle Record your bet.

39. Chapter 6 Review38 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? x 200 100 250 x = 80% =

40. Chapter 6 Review39 Ratios, Proportions, and Percents Write an equation and solve. What is 85% of 62? n =.85 * 62 n = 52.7

41. Chapter 6 Review40 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%

42. Chapter 6 Review41 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

43. Chapter 6 Review42 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 %

44. Chapter 6 Review43 Ratios, Proportions, and Percents Challenge Puzzle Will you lose or gain?

45. Chapter 6 Review44 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

46. Chapter 6 Review45 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

47. Chapter 6 Review46 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%

48. Chapter 6 Review47 Ratios, Proportions, and Percents In the United States in the 20 th century, average life expectancy increased from about 47 years to about 77 years. Find the percent of increase to the nearest percent. 64%

49. Chapter 6 Review48 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

50. Chapter 6 Review49 Ratios, Proportions, and Percents Challenge Puzzle The final challenge. What are you willing to risk?