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QR Challenge: Fractions, Decimals and Percentages

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. Sean earns £18,000 per year, he pays 20% tax on his earnings, he also pays 11% national insurance. How much does he have left each month?1035
2. John wants to earn some money over the summer, he buys 120 cans for £30. He wants to make a 40% profit, how much does he need to sell each can for?35p
3. Harry buys a car for £16,000 his old car gets him a £1700 discount. He pays 35% of the remaining balance straight away and then pays for the rest in instalments over 10 months. How much does he pay in each instalment?£929.50
4. A theme park charges £18 per adult and £11 per child, a discount of 15% is given if more than 10 people. A school books a trip for 18 children and 3 adults. How much do they pay?£214.20
5. A phone costs £450 RRP, at shop A there is an offer of 22% if bought with a case that costs £30, at shop B there is a discount of 15%, which costs you less in total?Shop A at £381
6. A shop is having a sale of 20% off. Today there is a special blue cross sale of an extra 10% off. A top costs £23 before the sale, what does it cost today?£16.56
7. On my maths test, I got 78%. There were 65 questions, what is the most amount of marks I could have got correct?51
8. On a chocolate bar, there is 5g of fat. This is 8% of your daily amount, so what is the daily amount?62,5
9. What does percent mean?per 100, a part of 100 where 100 is a whole.
10. Tom has a savings account, he saves 12% of his wages each month. His wages for January, February and March are £180, £320 and £258 respectively. What amount does he save over the three months?£90.96
11. In a savings account, the interest rate is 4% per year. There is £1250 in the account, how much is in there at the end of the year?£1300
12. Sally gets paid £1200 per month and 15% commission on her sales per month. This month she sells £550. How much does she earn this month?£1282.50
13. How do we convert a decimal to a percentage?multiply by 100
14. Order these; 0.43, 0.3, 31%, 3%, 0.07, 4.3%3%, 4.3%, 0.07, 0.3, 31%, 0.43
15. What is 5/8 as a percentage?62.5%
16. Last year 2000 trees were cut down for production purposes. This year there has been a 7.5% reduction. How many trees were cut down this year?1850
17. A shop sells a sofa for £500 not including VAT. VAT is 17.5%, what does the sofa cost after VAT?£587.50
18. A survey on different types of ice-cream people liked was conducted. 200 people were surveyed, 35 prefered chocolate, 24% chose strawberry and 43% picked vanilla. How many picked mint?31
19. 38% of my wages goes on nursery bills. Nursery costs £800 a month, how much do I earn each month approximately?£2105.26
20. A baby weighs 1.7kg when he was born, at 6 months he has put on 70% of his weight. How much does he weigh after 6 months?2.89kg

 



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