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QR Challenge: Rounding 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. Caroline thinks that the largest whole number that rounds to 400 is 449. is she correct? Explain why. answer
2. Henry says '747 to the nearest 10 is 740.' do you agree with Henry? Explain why.2
3. When a number is rounded to the nearest 100 it is 200. When the same number is rounded to the nearest 10 is it 250. What could that number be?3 33
4. The school kitchen wants to order enough jacket potatoes for lunch. Potatoes come in sacks of 100. How many sacks do they need for 766 children?4 44
5. Consider the number 2089, round it to the nearest 10, 100 and then 1000.5 55
6. Is 2478 nearer 2000 or 3000? Explain how you know 66
7. Tell me all the numbers that round to 3440 as the nearest 10 77
8. Tell me any seven numbers whihc round to 1700 as the nearest 100. 88

 



Rounding word problems : QR Challenge

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Rounding word problems : QR Challenge

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