QR Challenge: Rounding Large Numbers
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.
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. Round 34 568 to the nearest thousand | 35 000
|
2. Round 27 848 to the nearest hundred | 27 800
| 3. Round 85 981 to the nearest hundred | 86 000
| 4. Round 8 449 to the nearest ten | 8 450
| 5. Round 19 432 to the nearest hundred | 19 400
| 6. Round 49 599 to the nearest thousand | 50 000
| 7. Round 962 to the nearest hundred | 1 000
| 8. Round 87 281 to the nearest hundred | 87 300
| 9. Round 38 274 to the nearest thousand | 38 000
| 10. Round 49 919 to the nearest hundred | 49 900
| 11. Round 40 050 to the nearest hundred | 40 100
| 12. Round 67 404 to the nearest thousand | 67 000
| 13. Round 32 874 to the nearest ten | 32 870
| 14. Round 512 to the nearest hundred | 500
| 15. Round 99 999 to the nearest ten | 100 000
| 16. Round 53 545 to the nearest hundred | 53 500
| 17. Round 12 128 to the nearest hundred | 12 100
| 18. Round 65 488 to the nearest thousand | 65 000
| 19. Round 78 246 to the nearest hundred | 78 200
| 20. Round 43 543 to the nearest thousand | 44 000 |
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_34_568_to_the_nearest_thousand
Question 1 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_27_848_to_the_nearest_hundred
Question 2 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_85_981_to_the_nearest_hundred
Question 3 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_8_449_to_the_nearest_ten
Question 4 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_19_432_to_the_nearest_hundred
Question 5 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_49_599_to_the_nearest_thousand
Question 6 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_962_to_the_nearest_hundred
Question 7 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_87_281_to_the_nearest_hundred
Question 8 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_38_274_to_the_nearest_thousand
Question 9 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_49_919_to_the_nearest_hundred
Question 10 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_40_050_to_the_nearest_hundred
Question 11 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_67_404_to_the_nearest_thousand
Question 12 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_32_874_to_the_nearest_ten
Question 13 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_512_to_the_nearest_hundred
Question 14 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_99_999_to_the_nearest_ten
Question 15 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_53_545_to_the_nearest_hundred
Question 16 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_12_128_to_the_nearest_hundred
Question 17 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_65_488_to_the_nearest_thousand
Question 18 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_78_246_to_the_nearest_hundred
Question 19 (of 20)
Rounding Large Numbers: QR Challenge
https://www.classtools.net/QR/decode.php?text=Round_43_543_to_the_nearest_thousand
Question 20 (of 20)