QR Challenge: Decimal Scavenger Hunt

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

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

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. Katherine bought cosmetic items which cost $78.12 in total. She gave $100 to the shop keeper. How much does she receive as change?	$21.88
2. The average distance from the Earth to the Sun is 92,589,230 miles. The distance from Earth to the moon is 92,350,373 miles less than the distance drom Earth to the Sun. Find the distance from Earth to the moon.	238,857 miles
3. Samson bought 3 shirts which cost $12.30, $34.23 and $23.19 respectively. If Samson paid with a $100 bill how much change will he get back?	$30.28
4. Kelly scored 56.73 points and Karen scored 74.92 points on her university exam. How many points less did Kelly score than Karen?	18.19 points
5. Clara bought a brand new car for $26,086. The estimated value of the car after 5 years will be $15,990. If she sells the car after 5 years, by how much less money would she have?	$10,096
6. Kayla spends 1.23 hours studying for an English test, 1.40 hours studying for a math test, and 0.39 hours studying for science. How many hours does she spend studying? Round to the nearest whole number.	3.00 hours
7. A mixture is obtained by mixing two products A and B respectively. Product A weighs 234.56 grams and the mixture weighs 988.76 grams total. How much does product B weigh?	754.2 grams
8. What is the difference between the SMALLEST 6-digit whole number and the GREATEST 4-digit whole number?	90,001
9. Kevin measures a triangular plate whose sides are 12.4 inches, 9.45 inches and 10.35 inches respectively. What is the perimeter of a tringular plate?	32.2inches
10. David's home is 12.53 miles away from the lake and 16.73 miles away from his school. How much farther is David's school from the lake?	4.2 miles
11. Mr. Milson donates a $3,599 check for the Haiti relief fund. The amount in his account is $108,458. What will be the balance in his account once teh check clears?	$104,859
12. Catherine bought a tomato, a chicken, and an onion. The respective weights of these items were 2.12kg, 1.45kg adn 3.19kg. What is the total weight of the items bought?	6.76kg
13. Amy has $8.65 and her brother, Al, has 6 quarters, 3 dimes and 10 nickles. How much money do they have altogether?	$10.95
14. The U.S. weather bureau at the airport reported that 3.43 inches of rain fell during the first half of November. Anoter 2.88 inches fell during the 2nd half of that month. Did November's rainfall break November's record of 6.24 inches held since 1963? how do you know?	Yes, because 6.31>6.24
15. Round 863.453 to the nearest tenth.	863.5
16. Doug drew a grid with seven cells in a row. The pattern he used was: hundreths increase by 1 as you move to the right. The number .90 is found in the middle cell. What are the remaining six numbers in Doug's grid?	.87,.88,.89,.90,.91,.92,.93
17. Solve: $366.09 + $92.86	$478.95
18. Solve: 0.54 + 3.75	4.29
19. Solve: 46.08 + 987.321	1,033.401
20. Gerald has two $5 bills and three $10 bills. He spends $3.85 for a milkshake and $7.98 for a banana split. How much money does he have left?	$28.17

 

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