QR Challenge: Multiply and Dividing Decimal
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. 0.8 x 7 | 5.6
|
2. 0.5 x 7 | 3.5
| 3. 0.1 x 6 | 0.6
| 4. 0.6 x 4 | 2.4
| 5. 0.3 x 3 | 0.9
| 6. 0.2 x 0.5 | 0.1
| 7. 0.4 x 0.7 | 0.28
| 8. 0.8 x 0.1 | 0.08
| 9. 0.9 x 0.9 | 0.81
| 10. 0.6 x 0.1 | 0.06
| 11. 1.9 x 0.3 | 0.57
| 12. 1.6 x 0.5 | 0.8
| 13. 1.7 x 0.2 | 0.34
| 14. 1.3 x 0.7 | 0.91
| 15. 5.4 x 0.11 | 0.594
| 16. 5.2 x 0.97 | 5.044
| 17. 8.3 x 0.73 | 6.059
| 18. 4.6 x 0.11 | 0.506
| 19. 8.2 x 0.75 | 6.15
| 20. 3.2 ÷ 4 | 0.8
| 21. 4.8 ÷ 8 | 0.6
| 22. 7.2 ÷ 9 | 0.8
| 23. 2.4 ÷ 6 | 0.4
| 24. 1.8 ÷ 3 | 0.6
| 25. 5.6 ÷ 0.7 | 8
| 26. 6.3 ÷ 0.7 | 9
| 27. 2.7 ÷ 0.3 | 9
| 28. 4.9 ÷ 0.7 | 7
| 29. 2.8 ÷ 0.7 | 4
| 30. 1.65 ÷ 0.15 | 11
| 31. 27.3 ÷ 1.3 | 21
| 32. 0.03 ÷ 0.005 | 6
| 33. 0.99 ÷ 0.0009 | 1100 |
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.8_x_7
Question 1 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.5_x_7
Question 2 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.1_x_6
Question 3 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.6_x_4
Question 4 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.3_x_3
Question 5 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.2_x_0.5
Question 6 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.4_x_0.7
Question 7 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.8_x_0.1
Question 8 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.9_x_0.9
Question 9 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.6_x_0.1
Question 10 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.9_x_0.3
Question 11 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.6_x_0.5
Question 12 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.7_x_0.2
Question 13 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.3_x_0.7
Question 14 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=5.4_x_0.11
Question 15 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=5.2_x_0.97
Question 16 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=8.3_x_0.73
Question 17 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=4.6_x_0.11
Question 18 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=8.2_x_0.75
Question 19 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=3.2_÷_4
Question 20 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=4.8_÷_8
Question 21 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=7.2_÷_9
Question 22 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=2.4_÷_6
Question 23 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.8_÷_3
Question 24 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=5.6_÷_0.7
Question 25 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=6.3_÷_0.7
Question 26 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=2.7_÷_0.3
Question 27 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=4.9_÷_0.7
Question 28 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=2.8_÷_0.7
Question 29 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=1.65_÷_0.15
Question 30 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=27.3_÷_1.3
Question 31 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.03_÷_0.005
Question 32 (of 33)
Multiply and Dividing Decimal : QR Challenge
https://www.classtools.net/QR/decode.php?text=0.99_÷_0.0009
Question 33 (of 33)