QR Challenge: Decimal addition
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. 8.647 + 85.26 + 6.812 | 100.719
|
2. 86.201 + 863.1 + 5.89 | 955.191
| 3. 96.35 + 6.384 + 9.858 | 112.592
| 4. 7.61 + 5.967 + 596.874 | 610.451
| 5. 34.85 + 85.697 + 8.657 | 129.204
| 6. 9.325 + 85.247 + 895.7 | 990.272
| 7. 8.304 + 42.895 + 468.8 | 519.999
| 8. 9.621 + 314.8 + 5.647 | 330.068
| 9. 68.632 + 524.6 + 53.54 | 646.772
| 10. 93.67 + 6.712 + 653.6 | 753.982
| 11. 86.314 + 6.631 + 108.45 | 201.395
| 12. 7.201 + 85.201 + 654.2 | 746.602
| 13. 63.068 + 9.06 + 785.47 | 857.598
| 14. 763.5 + 7.04 + 69.355 | 839.895
| 15. 68.31 + 80.369 + 7.5 | 156.179
| 16. 97.35 + 5.987 + 324.6 | 427.937
| 17. 4.305 + 7.62 + 358.3 | 370.225
| 18. 96.3 + 302.54 + 6.985 | 405.825
| 19. 96.34 + 704.3 + 9.52 | 810.16
| 20. 78.31 + 2.08 + 4.87 | 85.26
| 21. 9.675 + 65.32 + 862 | 936.995
| 22. 63 + 532.1 + 4.97 | 600.07
| 23. 85.69 + 34 + 3.316 | 123.006
| 24. 9.623 + 475.32 + 9 | 484.943
| 25. 14 + 56.32 + 7.841 | 78.161 |
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=8.647_+_85.26_+_6.812
Question 1 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=86.201_+_863.1_+_5.89
Question 2 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=96.35_+_6.384_+_9.858
Question 3 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=7.61_+_5.967_+_596.874
Question 4 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=34.85_+_85.697_+_8.657
Question 5 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.325_+_85.247_+_895.7
Question 6 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=8.304_+_42.895_+_468.8
Question 7 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.621_+_314.8_+_5.647
Question 8 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=68.632_+_524.6_+_53.54
Question 9 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=93.67_+_6.712_+_653.6
Question 10 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=86.314_+_6.631_+_108.45
Question 11 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=7.201_+_85.201_+_654.2
Question 12 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=63.068_+_9.06_+_785.47
Question 13 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=763.5_+_7.04_+_69.355
Question 14 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=68.31_+_80.369_+_7.5
Question 15 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=97.35_+_5.987_+_324.6
Question 16 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=4.305_+_7.62_+_358.3
Question 17 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=96.3_+_302.54_+_6.985
Question 18 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=96.34_+_704.3_+_9.52
Question 19 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=78.31_+_2.08_+_4.87
Question 20 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.675_+_65.32_+_862
Question 21 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=63_+_532.1_+_4.97
Question 22 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=85.69_+_34_+_3.316
Question 23 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.623_+_475.32_+_9
Question 24 (of 25)
Decimal addition: QR Challenge
https://www.classtools.net/QR/decode.php?text=14_+_56.32_+_7.841
Question 25 (of 25)