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QR Challenge: Number Revision

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. List the factors of 12 1, 2, 3, 4, 6, 12
2. List the first 3 multiples of 11 11, 22, 33
3. List the first 5 prime numbers 2, 3, 5, 7, 11
4. Find the HCF of 9 and 15 3
5. Find the LCM of 15 and 30 15
6. Find the HCF of 24 and 32 8
7. Find the LCM of 30 and 50 150
8. Find the HCF of 16 and 32 16
9. 32 x 51 1632
10. 238 divided by 7 34
11. 0.3 x 0.5 0.15
12. 50% of 120 60
13. 10% of 730 73
14. 5% of 140 7
15. 1% of 172 1.72
16. 25% of 320 80
17. 75% of 80 60
18. 2 squared 4
19. Square root of 25 5
20. 9 squared add 8 squared 81 + 64 = 145
21. 14504 - 1736 12768
22. What is the value of the 6 in 35683 600
23. If 4 bars of chocolate cost £1.20, how much do 1 cost? 30p
24. Round 568 to the nearest 100 600
25. Round 8.34 to 1 decimal place 8.3
26. Find 3/5 of 25 15
27. Find 7/9 of 63 49
28. Write 23% as a decimal 0.23
29. Write 75% as a fraction 3/4
30. Convert 60% into a fraction 60/100 or 6/10 or 3/5

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=List_the_factors_of_12

Question 1 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=List_the_first_3_multiples_of_11

Question 2 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=List_the_first_5_prime_numbers

Question 3 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_HCF_of_9_and_15

Question 4 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_LCM_of_15_and_30

Question 5 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_HCF_of_24_and_32

Question 6 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_LCM_of_30_and_50

Question 7 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_HCF_of_16_and_32

Question 8 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=32_x_51

Question 9 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=238_divided_by_7

Question 10 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=0.3_x_0.5

Question 11 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=50%_of_120

Question 12 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=10%_of_730

Question 13 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=5%_of_140

Question 14 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=1%_of_172

Question 15 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=25%_of_320

Question 16 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=75%_of_80

Question 17 (of 30)

 


Number Revision: QR Challenge

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

Question 18 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Square_root_of_25

Question 19 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=9_squared_add_8_squared

Question 20 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=14504_-_1736

Question 21 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_value_of_the_6_in_35683

Question 22 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=If_4_bars_of_chocolate_cost_£1.20,_how_much_do_1_cost?

Question 23 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Round_568_to_the_nearest_100

Question 24 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Round_8.34_to_1_decimal_place

Question 25 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_3/5_of_25

Question 26 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_7/9_of_63

Question 27 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_23%_as_a_decimal

Question 28 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_75%_as_a_fraction

Question 29 (of 30)

 


Number Revision: QR Challenge

https://www.classtools.net/QR/decode.php?text=Convert_60%_into_a_fraction

Question 30 (of 30)