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QR Challenge: Ratio Review

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.


B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!


C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.


Questions / Answers (teacher reference)

Question

Answer

1. 1. Write the ratio 10 to 7 in two other ways. 10:7, 10/7
2. 2. Write the ratio 100:101 in two other ways. 100 to 101, 100/101
3. 3. Use a table to create three equivalent ratios for 2:7. 4:14, 6:21, 16:56
4. 4. Use a table to create three equivalent ratios for 96:48. 48:24, 24:12, 12:6
5. 5. Use a table to create three equivalent ratios for 5:8. 10:16, 15:24, 20:32
6. 6. Use a table to create three equivalent ratios for 25:26. Hint: Scale up! 50:52, 75:78, 100:104
7. 7. Tarium is entering a 5k race for charity. His father pledges $0.75 for every 0.5 kilometers he runs. If Tarium runs 4.5 kilometers, how much will his father donate? $26.25
8. 8. According to Katelyn's dance schedule, she is required to practice 20 minutes at home for every 60 minutes of practice she does as school. How many minutes of practice does Katelyn need to complete at home if she practices 90 minutes at school? 30 minutes
9. 9. The first ratio in a list of equivalent ratios is 7:2, the second ratio is 14:4, the fourth ratio is 28:8, and the fifth ratio is 35:10. What is the third ratio? Hint: Create a table! 21:6
10. 10. An 8-ounce bag of sunflower seeds costs $1.68. A 4-ounce bag of sunflower seeds costs $0.88. Which is the better deal? the 8-ounce bag
11. 11. Hannah charges $28 for 3 hours of cheer lessons. Taylor charges $18 for 2 hours of swimming lessons. Which instructor offers a better deal? Taylor
12. 12. Write the ratio 4:9 in two different ways. 4 to 9, 4/9
13. 13. A 12- pound bag of dog food costs $12.36. A 15-pound bag of dog food costs $15.30. Which is the better deal? the 15 lb. bag
14. 14. A recipe calls for 4 cups of sugar and 16 cups of water. If the recipe is reduced, how many cups of water should be used for 1 cup of sugar? 4 cups
15. 15. Maria mixes 3 units of red paint with 8 units of white paint to get pink. How many units of red paint should she mix with 12 units of white paint to get the same pink shade? 4.5 units
16. 16. The bakers at Healthy Bakery can make 330 bagels in 5 hours. What was that rate per hour? 66 bagels/ hr.
17. 17. You can buy 3 apples at the Quick Market for $1.35. You can buy 5 of the same apples at Stop and Save for $2.35. Which place is the better buy? Quick Market
18. 18. You can buy 5 cans for green beans at the Village Market for $2.30. You can buy 10 of the same cans of beans at Sam's Club for $6.10. Which place is the better buy? Village Market
19. 19. A jet travels 410 miles in 2 hours. What is the rate of speed of the jet? 205 mph
20. 20. Gas mileage is the number of miles you can drive on a a gallon of gasoline. A test of a new car results in 500 miles on 20 gallons of gas. What is the car's gas mileage? 25 mpg
21. 21. A ferris wheel can accommodate 45 people in 25 minutes. What was that rate per hour? 108 people/ hr.
22. 22. An ice cream factory makes 260 quarts of ice cream in 10 hours. What was that rate per day? 624 quarts/ day
23. 23. The bakers at Healthy Bakery can make 330 bagels in 5 hours. How many bagels can they bake in 23 hours? 1,518 bagels
24. 24. A jet travels 410 miles in 2 hours. At this rate, how far could the jet fly in 11 hours? 2,255 miles
25. 25. Gas mileage is the number of miles you can drive on a a gallon of gasoline. A test of a new car results in 500 miles on 20 gallons of gas. How far could you drive on 75 gallons of gas? 1,875 miles
26. 26. A ferris wheel can accommodate 45 people in 25 minutes. How many people could ride the ferris wheel in 6 hours? 648 people
27. 27. An ice cream factory makes 260 quarts of ice cream in 10 hours. How many quarts could be made in 12 hours? 312 quarts
28. 28. Simplify this ratio: 36 to 6 6 to 1
29. 29. Simplify this ratio: 2 to 4 1 to 2
30. 30. Simplify this ratio: 9 to 81 1 to 9

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q1/30:

1. Write the ratio 10 to 7 in two other ways. &choe=UTF-8

Question 1 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q2/30:

2. Write the ratio 100:101 in two other ways. &choe=UTF-8

Question 2 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q3/30:

3. Use a table to create three equivalent ratios for 2:7. &choe=UTF-8

Question 3 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q4/30:

4. Use a table to create three equivalent ratios for 96:48. &choe=UTF-8

Question 4 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q5/30:

5. Use a table to create three equivalent ratios for 5:8. &choe=UTF-8

Question 5 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q6/30:

6. Use a table to create three equivalent ratios for 25:26. Hint: Scale up! &choe=UTF-8

Question 6 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q7/30:

7. Tarium is entering a 5k race for charity. His father pledges $0.75 for every 0.5 kilometers he runs. If Tarium runs 4.5 kilometers, how much will his father donate? &choe=UTF-8

Question 7 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q8/30:

8. According to Katelyn's dance schedule, she is required to practice 20 minutes at home for every 60 minutes of practice she does as school. How many minutes of practice does Katelyn need to complete at home if she practices 90 minutes at school? &choe=UTF-8

Question 8 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q9/30:

9. The first ratio in a list of equivalent ratios is 7:2, the second ratio is 14:4, the fourth ratio is 28:8, and the fifth ratio is 35:10. What is the third ratio? Hint: Create a table! &choe=UTF-8

Question 9 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q10/30:

10. An 8-ounce bag of sunflower seeds costs $1.68. A 4-ounce bag of sunflower seeds costs $0.88. Which is the better deal? &choe=UTF-8

Question 10 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q11/30:

11. Hannah charges $28 for 3 hours of cheer lessons. Taylor charges $18 for 2 hours of swimming lessons. Which instructor offers a better deal? &choe=UTF-8

Question 11 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q12/30:

12. Write the ratio 4:9 in two different ways. &choe=UTF-8

Question 12 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q13/30:

13. A 12- pound bag of dog food costs $12.36. A 15-pound bag of dog food costs $15.30. Which is the better deal? &choe=UTF-8

Question 13 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q14/30:

14. A recipe calls for 4 cups of sugar and 16 cups of water. If the recipe is reduced, how many cups of water should be used for 1 cup of sugar? &choe=UTF-8

Question 14 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q15/30:

15. Maria mixes 3 units of red paint with 8 units of white paint to get pink. How many units of red paint should she mix with 12 units of white paint to get the same pink shade? &choe=UTF-8

Question 15 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q16/30:

16. The bakers at Healthy Bakery can make 330 bagels in 5 hours. What was that rate per hour? &choe=UTF-8

Question 16 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q17/30:

17. You can buy 3 apples at the Quick Market for $1.35. You can buy 5 of the same apples at Stop and Save for $2.35. Which place is the better buy? &choe=UTF-8

Question 17 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q18/30:

18. You can buy 5 cans for green beans at the Village Market for $2.30. You can buy 10 of the same cans of beans at Sam's Club for $6.10. Which place is the better buy? &choe=UTF-8

Question 18 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q19/30:

19. A jet travels 410 miles in 2 hours. What is the rate of speed of the jet? &choe=UTF-8

Question 19 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q20/30:

20. Gas mileage is the number of miles you can drive on a a gallon of gasoline. A test of a new car results in 500 miles on 20 gallons of gas. What is the car's gas mileage? &choe=UTF-8

Question 20 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q21/30:

21. A ferris wheel can accommodate 45 people in 25 minutes. What was that rate per hour? &choe=UTF-8

Question 21 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q22/30:

22. An ice cream factory makes 260 quarts of ice cream in 10 hours. What was that rate per day? &choe=UTF-8

Question 22 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q23/30:

23. The bakers at Healthy Bakery can make 330 bagels in 5 hours. How many bagels can they bake in 23 hours? &choe=UTF-8

Question 23 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q24/30:

24. A jet travels 410 miles in 2 hours. At this rate, how far could the jet fly in 11 hours? &choe=UTF-8

Question 24 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q25/30:

25. Gas mileage is the number of miles you can drive on a a gallon of gasoline. A test of a new car results in 500 miles on 20 gallons of gas. How far could you drive on 75 gallons of gas? &choe=UTF-8

Question 25 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q26/30:

26. A ferris wheel can accommodate 45 people in 25 minutes. How many people could ride the ferris wheel in 6 hours? &choe=UTF-8

Question 26 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q27/30:

27. An ice cream factory makes 260 quarts of ice cream in 10 hours. How many quarts could be made in 12 hours? &choe=UTF-8

Question 27 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q28/30:

28. Simplify this ratio: 36 to 6 &choe=UTF-8

Question 28 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q29/30:

29. Simplify this ratio: 2 to 4 &choe=UTF-8

Question 29 (of 30)

 



Ratio Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ratio Review
Q30/30:

30. Simplify this ratio: 9 to 81 &choe=UTF-8

Question 30 (of 30)