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QR Challenge: Subtraction Word Problems

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. There are 4257 flowers blooming in a park.3127 of them are in the front of the park. How many flowers are blooming in the back garden?1130
2. Nina drove her car 5204 kilometres to visit her cousin's family.On the way back she found a shortcut and only drove 4169 kilometres.How many kilometres did she save on the way back?1035
3. A large secondary school has 4289 students.There are 1157 boys.How many children girls?3132
4. A balloon manufacturer made 6314 packets of balloons in a week.An order came in for 2126. How many balloons were left?4188
5. There were 5413 books in the library.Some students came and borrowed 3124 of the books.How many books are left?2289
6. Greggs made 6382 cupcakes for the weekend.If 4214 are sold on Saturday, how many are available to buy on Sunday?2114

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q1/6:

There are 4257 flowers blooming in a park.3127 of them are in the front of the park. How many flowers are blooming in the back garden?&choe=UTF-8

Question 1 (of 6)

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q2/6:

Nina drove her car 5204 kilometres to visit her cousin's family.On the way back she found a shortcut and only drove 4169 kilometres.How many kilometres did she save on the way back?&choe=UTF-8

Question 2 (of 6)

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q3/6:

A large secondary school has 4289 students.There are 1157 boys.How many children girls?&choe=UTF-8

Question 3 (of 6)

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q4/6:

A balloon manufacturer made 6314 packets of balloons in a week.An order came in for 2126. How many balloons were left?&choe=UTF-8

Question 4 (of 6)

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q5/6:

There were 5413 books in the library.Some students came and borrowed 3124 of the books.How many books are left?&choe=UTF-8

Question 5 (of 6)

 



Subtraction Word Problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Subtraction Word Problems
Q6/6:

Greggs made 6382 cupcakes for the weekend.If 4214 are sold on Saturday, how many are available to buy on Sunday?&choe=UTF-8

Question 6 (of 6)