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QR Challenge: Multiplying by 2dg 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. 678x3423052
2. 891x4035640
3. 3333x65216645
4. 154x9514630
5. 78x141092
6. 66x503300
7. Robert saves £5.40 every week for 8 weeks. How much has he saved after 8 weeks?£43.20
8. 9000x872000
9. 6701x90603090
10. MCCxLXIV76800
11. LXXIXsquared6241
12. 73cubed389017
13. 51squared2601
14. 87cubed658503
15. 4789x25119725
16. Rachel runs 4.67km in 30 minutes. How far does she run in 4 hours?37.36km
17. 784x3225088
18. 54.35x9489.15
19. 123.99x4495.96
20. 54.56x653546.40

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=678x34

Question 1 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=891x40

Question 2 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=3333x65

Question 3 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=154x95

Question 4 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=78x14

Question 5 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=66x50

Question 6 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Robert_saves_£5.40_every_week_for_8_weeks._How_much_has_he_saved_after_8_weeks?

Question 7 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=9000x8

Question 8 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=6701x90

Question 9 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

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

Question 10 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

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

Question 11 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=73cubed

Question 12 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=51squared

Question 13 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=87cubed

Question 14 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=4789x25

Question 15 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=Rachel_runs_4.67km_in_30_minutes._How_far_does_she_run_in_4_hours?

Question 16 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=784x32

Question 17 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=54.35x9

Question 18 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=123.99x4

Question 19 (of 20)

 


Multiplying by 2dg numbers: QR Challenge

https://www.classtools.net/QR/decode.php?text=54.56x65

Question 20 (of 20)