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QR Challenge: Compute with multi digit numbers

Created using the ClassTools QR Treasure Hunt Generator

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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=Compute with multi digit numbers
Q1/30:

3.1+5&choe=UTF-8

Question 1 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q2/30:

3.1-2&choe=UTF-8

Question 2 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q3/30:

39.2+.8&choe=UTF-8

Question 3 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q4/30:

40-39.2&choe=UTF-8

Question 4 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q5/30:

25.5+.5&choe=UTF-8

Question 5 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q6/30:

31.6-32.8&choe=UTF-8

Question 6 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q7/30:

7.4+16.3&choe=UTF-8

Question 7 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q8/30:

9.5+.5&choe=UTF-8

Question 8 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q9/30:

10-.5&choe=UTF-8

Question 9 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q10/30:

3.5-3.4&choe=UTF-8

Question 10 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q11/30:

Estimate1.22x2.11&choe=UTF-8

Question 11 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q12/30:

Estimate12.1x12.1&choe=UTF-8

Question 12 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q13/30:

Estimate7.43x2.43&choe=UTF-8

Question 13 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q14/30:

Estimate3.62x4.3&choe=UTF-8

Question 14 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q15/30:

Estimate7.62x4.9&choe=UTF-8

Question 15 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q16/30:

5.3x2&choe=UTF-8

Question 16 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q17/30:

2x1.6&choe=UTF-8

Question 17 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q18/30:

7.32x6&choe=UTF-8

Question 18 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q19/30:

22x.3&choe=UTF-8

Question 19 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q20/30:

1.48x6.3&choe=UTF-8

Question 20 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q21/30:

Estimate 2.1x5&choe=UTF-8

Question 21 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q22/30:

Estimate 4.2x7&choe=UTF-8

Question 22 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q23/30:

Estimate 3.3x6&choe=UTF-8

Question 23 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q24/30:

2.6x8&choe=UTF-8

Question 24 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q25/30:

1.3x7&choe=UTF-8

Question 25 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q26/30:

3.4x4&choe=UTF-8

Question 26 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q27/30:

1.5x9&choe=UTF-8

Question 27 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q28/30:

4.1x6&choe=UTF-8

Question 28 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q29/30:

3.3x8&choe=UTF-8

Question 29 (of 30)

 


Compute with multi digit numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Compute with multi digit numbers
Q30/30:

4.6x9&choe=UTF-8

Question 30 (of 30)