Question #1

1. Question #1 A comparison of two values that are measured using different units is known as a ______________ A rate B ratio I NEED HELP! End Review C proportion

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3. Try Again HERE IS A HINT: look back at your notes, or on the homework page called, “Rates vs. Ratios” Back To Question 1 End Review

4. Question #2 Which of the comparisons below is a ratio? A boys to girls B basketballs per student I NEED HELP! End Review C cupcakes per teacher

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6. Try Again HERE IS A HINT: besides the mathematical difference between rates and ratios (look at the units of measurement) we also learned a trick about the words “to” and “per” Back To Question 2 End Review

7. Question #3 Which statement about similar figures below is false? A Their corresponding sides are proportional B Their corresponding angles are congruent I NEED HELP! End Review C All triangles are similar to each other

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9. Try Again HERE IS A HINT: Would an isosceles triangle and a right triangle be similar? Back To Question 3 End Review

10. Question #4 Would a large square and a small square have corresponding sides that are proportional? A No B Yes I NEED HELP! End Review C Maybe

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12. Try Again HERE IS A HINT: Draw two squares and then give them measurements (remember all 4 sides of a square are equal) and then set-up proportions. Cross multiply to ensure that they are proportional! Back To Question 4 End Review

13. 12 in 16 in 9 in x in 20 in 15 in Question #5 The shapes below are similar. Use proportions to find the missing side. A 12 inches B 9 inches I NEED HELP! End Review C 15 inches

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15. Try Again HERE IS A HINT: It would be hard to use size change factor on this problem. Set-up a proportion to compare the first triangle to the second triangle. If it helps, draw the triangles on a piece of paper and then use our color coding method to help you. Back To Question 5 End Review

16. Question #6 Use proportions to determine if the rectangles below are similar. 6 in 4 in 1 in 3 in A Yes, they are similar B No, they are not similar I NEED HELP! End Review C Can not tell from the information given

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18. Try Again HERE IS A HINT: For two shapes to be similar, their corresponding sides must be proportional. To determine this, set-up you proportion and cross multiply… are your cross products equal? Back To Question 6 End Review

19. Question #7 Which of the following is a rate? A donuts to bagels B boys to girls I NEED HELP! End Review C pencils per giraffe

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21. Try Again HERE IS A HINT: use the “to”/“per” trick!!! Back To Question 7 End Review

22. Question #8 Use cross multiplication to find the value of the variable. A 30 B 15 I NEED HELP! End Review C 2

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24. Try Again HERE IS A HINT: Try using a calculator to make sure that your computation is correct. The first step should read: 2 • 75 = 5 • x Back To Question 8 End Review

25. Question #9 John is a skilled free throw shooter. He can make 8 shots out of every 9 shots he takes. If John takes 72 shots, how many would he make at this rate? A 72 shots made B 71 shots made I NEED HELP! End Review C 64 shots made

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27. Try Again HERE IS A HINT: your proportion should be set-up with shots made in the numerator and shots attempted (the shots he takes) in the denominator Back To Question 9 End Review

28. Question #10 Use the table below to predict how much it would cost to purchase 3 t-shirts. A $16.25 B $4.00 I NEED HELP! End Review C $3.75

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30. Try Again HERE IS A HINT: There are many methods you can use to solve this problem. First, you can set up a proportion and cross multiply… or you can find the cost of one shirt and multiply up to find the cost for 3… or you can find numbers that add or subtract to make 3 t-shirts, or you can find the “in between” if there is one, that would provide the cost for 3 t-shirts Back To Question 10 End Review

31. Question #11 One of the terms below is different from the others. Which term is it? A tip B tax I NEED HELP! End Review C discount

32. Great Job!!!! Did you know that this is correct because it is the only term that means you will have to subtract from the cost rather then add? Next Question End Review

33. Try Again HERE IS A HINT: Think about what operation each of these terms implies. Which ones will you have to add to the cost? Which ones will you need to subtract from the cost? Back To Question 11 End Review

34. Question #12 What number is 5% of 250? A 125 B 12.5 I NEED HELP! End Review C 1.25

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36. Try Again HERE IS A HINT: Back To Question 12 End Review

37. Question #13 What percent of 360 is 72? A 25% B 20% I NEED HELP! End Review C 500%

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39. Try Again HERE IS A HINT: Did you place the correct numbers in the correct locations of your proportion based on the “is” and “of”? Back To Question 13 End Review

40. Question #14 Laura painted her room with pink paint that was made by mixing paint at a ratio of 5 parts white paint to 2 parts red paint. Will a mixture of paint that is 15 parts white to 5 parts red create the same shade of pink as the paint that Laura used? Use your knowledge of proportions to explain your answer A Yes B No I NEED HELP! End Review

41. Great Job!!!! You got the right answer but can you explain why? Set up a proportion to compare the two mixtures. Are the cross products in this proportion equal? No they are not, so that means the mixtures are not proportional! You can also think about it this way… the amount of white paint was tripled, if the amount of red paint were tripled, it would have to be 6 parts red and the second mixture is only 2 parts red. Next Question End Review

42. Try Again You got the right answer but can you explain why? Set up a proportion to compare the two mixtures. Are the cross products in this proportion equal? No they are not, so that means the mixtures are not proportional! You can also think about it this way… the amount of white paint was tripled, if the amount of red paint were tripled, it would have to be 6 parts red and the second mixture is only 2 parts red. Back To Question 14 End Review

43. Question #15 There are 40 students in Mrs. Schuman’s art class. If 20% of the students have a dog, how many students have a dog? A 20 students B 200 students I NEED HELP! End Review C 8 students

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45. Try Again HERE IS A HINT: The percent is easy to place in our proportion so the only trouble we might have is the 40 students… does this number represent the whole class or just a part of the class? Back To Question 15 End Review

46. Question #16 Mr. Minnuto went to Lowes to buy paint for his daughter’s bedroom. A two gallon bucket of paint costs $42. However, when Mr. Minnuto went to check out he found a coupon that offered a discount of 35% off. How much will the gallon of paint cost Mr. Minnuto? A $14.70 B $27.30 I NEED HELP! End Review C $27.93

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48. Try Again HERE IS A HINT: Did you answer the question that was asked? The question wanted to know what the final cost would be… that means you need to do something with the original cost and the discount. Back To Question 16 End Review