QR Challenge: addition and 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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. There are 167 books in one classroom and 392 books in the other. How many books are there altogether in both classrooms?	559
2. Jay has a collection of 263 football cards. His brother has 189. How many more football cards does Jay have?	74
3. A family drive 208 miles from London to Manchester, and then 213 miles on to Glasgow. How far did they travel altogether?	421
4. A cricket team score 456 in the first innings and 249 in the second innings. How many runs did they score altogether?	705
5. Jenny has £5.67. She spends £2.85 on a present for her brother. How much money does she have left?	2.91
6. Abi collects stamps. She has 351 in a box and 456 in a book. How many does she have altogether?	807
7. A lorry driver has a 561 mile journey. He stops for a break after 314 miles. How much further has he to travel?	247
8. A pack of Christmas cards costs £5.49.How much change would there be from £10.00?	4.51
9. A packet of lentils weighs 450g and a packet of kidney beans weighs 385g. How much do they both weigh altogether?	835
10. A shopkeeper has 367 bottles of lemonade. He orders 480 more. How many bottles of lemonade will he have now?	847

 

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