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QR Challenge: Compute with multi digit numbers

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

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. 3.1+58.1
2. 3.1-21.1
3. 39.2+.840
4. 40-39.21.8
5. 25.5+.526
6. 31.6-32.8.2
7. 7.4+16.323.7
8. 9.5+.510
9. 10-.59.5
10. 3.5-3.4.1
11. Estimate1.22x2.112
12. Estimate12.1x12.1144
13. Estimate7.43x2.436
14. Estimate3.62x4.316
15. Estimate7.62x4.923
16. 5.3x210.6
17. 2x1.63.2
18. 7.32x643.92
19. 22x.36.6
20. 1.48x6.393.24
21. Estimate 2.1x510.5
22. Estimate 4.2x729.4
23. Estimate 3.3x619.8
24. 2.6x820.8
25. 1.3x79.1
26. 3.4x413.4
27. 1.5x913.9
28. 4.1x624.6
29. 3.3x826.4
30. 4.6x941.4

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.1+5

Question 1 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.1-2

Question 2 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=39.2+.8

Question 3 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=40-39.2

Question 4 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=25.5+.5

Question 5 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=31.6-32.8

Question 6 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=7.4+16.3

Question 7 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=9.5+.5

Question 8 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=10-.5

Question 9 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.5-3.4

Question 10 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate1.22x2.11

Question 11 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate12.1x12.1

Question 12 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate7.43x2.43

Question 13 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate3.62x4.3

Question 14 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate7.62x4.9

Question 15 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=5.3x2

Question 16 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=2x1.6

Question 17 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=7.32x6

Question 18 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=22x.3

Question 19 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=1.48x6.3

Question 20 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate_2.1x5

Question 21 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate_4.2x7

Question 22 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Estimate_3.3x6

Question 23 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=2.6x8

Question 24 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=1.3x7

Question 25 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.4x4

Question 26 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=1.5x9

Question 27 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=4.1x6

Question 28 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.3x8

Question 29 (of 30)

 



Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=4.6x9

Question 30 (of 30)