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QR Challenge: Estimating addition word problems

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. Kyle bought 37 Moshi Monster cards from the shop. Tyler bought 54. Roughly how many did they have altogether?90
2. Apples cost 27p, bananas cost 31p and grapes cost 35p. Estimate how much it would cost to buy one of each.100
3. Gary has 75p, his mum gives him another 46p. Roughly how much money does he have altogether?130
4. Sam walks 54m. Hayley walks 37m more. Roughly how many metres did Hayley walk?90m
5. Harry buys a cup of coffee for 94p and a biscuit for 37p. How much does he spend in total? Give an estimate.130
6. Libby has 27 sweets in a bag. Amy has 49 more. How many sweets does Amy have altogether? Give an estimate.80
7. Ryan watches tele for 56 minutes before his tea then again for another 45 minutes. How much tele does he watch in total? Give an estimate.110
8. The coffee shop sells 127 cups of coffee one day and 97 the next. Roughly how many cups of coffee have they sold in total?230
9. Harry has £112 in his bank. His friend Tim has £87 in his bank. Roughly how much do they have altogether?200

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Kyle-bought-37-Moshi-Monster-cards-from-the-shop.-Tyler-bought-54.-Roughly-how-many-did-they-have-altogether?

Question 1 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Apples-cost-27p,-bananas-cost-31p-and-grapes-cost-35p.-Estimate-how-much-it-would-cost-to-buy-one-of-each.

Question 2 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Gary-has-75p,-his-mum-gives-him-another-46p.-Roughly-how-much-money-does-he-have-altogether?

Question 3 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Sam-walks-54m.-Hayley-walks-37m-more.-Roughly-how-many-metres-did-Hayley-walk?

Question 4 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Harry-buys-a-cup-of-coffee-for-94p-and-a-biscuit-for-37p.-How-much-does-he-spend-in-total?-Give-an-estimate.

Question 5 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Libby-has-27-sweets-in-a-bag.-Amy-has-49-more.-How-many-sweets-does-Amy-have-altogether?-Give-an-estimate.

Question 6 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Ryan-watches-tele-for-56-minutes-before-his-tea-then-again-for-another-45-minutes.-How-much-tele-does-he-watch-in-total?-Give-an-estimate.

Question 7 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-coffee-shop-sells-127-cups-of-coffee-one-day-and-97-the-next.-Roughly-how-many-cups-of-coffee-have-they-sold-in-total?

Question 8 (of 9)

 


Estimating addition word problems: QR Challenge

https://www.classtools.net/QR/decode.php?text=Harry-has-£112-in-his-bank.-His-friend-Tim-has-£87-in-his-bank.-Roughly-how-much-do-they-have-altogether?

Question 9 (of 9)