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QR Challenge: Ratios and Proportions Review

Created using the ClassTools QR Treasure Hunt Generator

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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. An ice cream factory makes 150 quarts of ice cream in 5 hours. How many quarts could be made in 12 hours?360
2. A test of a new car results in 590 miles on 10 gallons of gas. How far could you drive on 45 gallons of gas?2,655
3. The local animal shelter has 5 dogs for every 2 cats. They have a total of 30 dogs. How many are cats?12
4. You are making a fruit salad. The ratio of strawberries to blueberries is 5 to 6. You put 18 blueberries in the fruit salad. How many strawberries are there?15
5. The bakers at Healthy Bakery can make 310 bagels in 5 hours. How many bagels can they bake in 21 hours?1302
6. A school carnival is offering candy and games as prizes. There are a total of 48 prizes. The ratio of candy to games is 5 : 7. How many more game prizes are there than candy prizes?8
7. 3 out of 11 students voted for Jack in the student council election. The other students voted for Jill. If 24 students voted for Jill, how many voted in all?33
8. In a bag of mixed candies there are 2 chocolate centers for every 3 caramel centers. There are 30 candies in the box. How many caramel centers are there?18
9. A middle school 45 sixth and seventh graders going on a field trip. The ratio of sixth graders to seventh graders is 4 to 5. How many sixth graders are going on field trip?20
10. For the school picnic, you baked 42 chocolate chip cookies and 28 sugar cookies. You package them in boxes that have the same ratio of chocolate chip to sugar as the total cookies. How many sugar cookies are in a box that has 24 chocolate chip cookies?16
11. At the beach this weekend, the ratio of sand castles to kites was 3 to 5. If there werw 15 kites spotted, how many things in all were seen?24
12. There are 100 animals living in the neighborhood pond. If the ratio of ducks to frogs is 7 to 3, how many frogs live in the pond?30
13. The ratio of boys to girls in the cafeteria is 3 to 7. If there are 84 students in the cafeteria, how many are girls?36
14. The ratio of elves to reindeer in the North Pole is 5 to 3. If there are 90 elves, how many reindeer are there?150
15. The number of free apps received is determined by using a ratio. When you purchase 45 apps, you will receive 27 free. How many apps must you purchase to receive 15 free?25

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=An-ice-cream-factory-makes-150-quarts-of-ice-cream-in-5-hours.-How-many-quarts-could-be-made-in-12-hours?

Question 1 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-test-of-a-new-car-results-in-590-miles-on-10-gallons-of-gas.-How-far-could-you-drive-on-45-gallons-of-gas?

Question 2 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-local-animal-shelter-has-5-dogs-for-every-2-cats.--They-have-a-total-of-30-dogs.--How-many-are-cats?

Question 3 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=You-are-making-a-fruit-salad.--The-ratio-of-strawberries-to-blueberries-is-5-to-6.--You-put-18-blueberries-in-the-fruit-salad.--How-many-strawberries-are-there?

Question 4 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-bakers-at-Healthy-Bakery-can-make-310-bagels-in-5-hours.-How-many-bagels-can-they-bake-in-21-hours?

Question 5 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-school-carnival-is-offering-candy-and-games-as-prizes.--There-are-a-total-of-48-prizes.-The-ratio-of-candy-to-games-is-5-:-7.--How-many-more-game-prizes-are-there-than-candy-prizes?

Question 6 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=3-out-of-11-students-voted-for-Jack-in-the-student-council-election.--The-other-students-voted-for-Jill.--If-24-students-voted-for-Jill,-how-many-voted-in-all?

Question 7 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=In-a-bag-of-mixed-candies-there-are-2-chocolate-centers-for-every-3-caramel-centers.--There-are-30-candies-in-the-box.--How-many-caramel-centers-are-there?

Question 8 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-middle-school-45-sixth-and-seventh-graders-going-on-a-field-trip.-The-ratio-of-sixth-graders-to-seventh-graders-is-4-to-5.-How-many-sixth-graders-are-going-on-field-trip?

Question 9 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=For-the-school-picnic,-you-baked-42-chocolate-chip-cookies-and-28-sugar-cookies.-You-package-them-in-boxes-that-have-the-same-ratio-of-chocolate-chip-to-sugar-as-the-total-cookies.-How-many-sugar-cookies-are-in-a-box-that-has-24-chocolate-chip-cookies?

Question 10 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=At-the-beach-this-weekend,-the-ratio-of-sand-castles-to-kites-was-3-to-5.--If-there-werw-15-kites-spotted,-how-many-things-in-all-were-seen?

Question 11 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=There-are-100-animals-living-in-the-neighborhood-pond.--If-the-ratio-of-ducks-to-frogs-is-7-to-3,-how-many-frogs-live-in-the-pond?

Question 12 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-ratio-of-boys-to-girls-in-the-cafeteria-is-3-to-7.--If-there-are-84-students-in-the-cafeteria,-how-many-are-girls?

Question 13 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-ratio-of-elves-to-reindeer-in-the-North-Pole-is-5-to-3.--If-there-are-90-elves,-how-many-reindeer-are-there?

Question 14 (of 15)

 


Ratios and Proportions Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-number-of-free-apps-received-is-determined-by-using-a-ratio.--When-you-purchase-45-apps,-you-will-receive-27-free.--How-many-apps-must-you-purchase-to-receive-15-free?

Question 15 (of 15)