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QR Challenge: Addition and Subtraction

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. 4+6=10
2. What is 2 less than 11?nine
3. 8-2___ 9-1<
4. I have 17 sweets and I eat 3 sweets how many do I have left?14
5. 5+7=12
6. 19-3=16
7. 18 is _______ 23 (answer in words)less than
8. Which is bigger 17 or 5+717
9. Seventeen minus fourteen is?13
10. Fifteen birds were in a tree and four of them flew away. How many birds are left now?11
11. 9+3___4+4+4=
12. What is 1 more than 18?nineteen
13. 2+2+2___4+0>
14. 14 is _______ 12 (answer in words)more than
15. 21 children were in the classroom. 6 of them went to lunch early. How many are left now?15
16. 14-7=seven
17. twelve is _______ twelve (answer in words)equal to
18. Well done you have finished the hunt!:)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q1/18:

4+6=&choe=UTF-8

Question 1 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q2/18:

What is 2 less than 11?&choe=UTF-8

Question 2 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q3/18:

8-2___ 9-1&choe=UTF-8

Question 3 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q4/18:

I have 17 sweets and I eat 3 sweets how many do I have left?&choe=UTF-8

Question 4 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q5/18:

5+7=&choe=UTF-8

Question 5 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q6/18:

19-3=&choe=UTF-8

Question 6 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q7/18:

18 is _______ 23 (answer in words)&choe=UTF-8

Question 7 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q8/18:

Which is bigger 17 or 5+7&choe=UTF-8

Question 8 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q9/18:

Seventeen minus fourteen is?&choe=UTF-8

Question 9 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q10/18:

Fifteen birds were in a tree and four of them flew away. How many birds are left now?&choe=UTF-8

Question 10 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q11/18:

9+3___4+4+4&choe=UTF-8

Question 11 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q12/18:

What is 1 more than 18?&choe=UTF-8

Question 12 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q13/18:

2+2+2___4+0&choe=UTF-8

Question 13 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q14/18:

14 is _______ 12 (answer in words)&choe=UTF-8

Question 14 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q15/18:

21 children were in the classroom. 6 of them went to lunch early. How many are left now?&choe=UTF-8

Question 15 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q16/18:

14-7=&choe=UTF-8

Question 16 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q17/18:

twelve is _______ twelve (answer in words)&choe=UTF-8

Question 17 (of 18)

 



Addition and Subtraction : QR Challenge

https://www.classtools.net/QR/decode.php?text=Addition and Subtraction
Q18/18:

Well done you have finished the hunt!&choe=UTF-8

Question 18 (of 18)