Detailed Case Study Search the Archive Feedback

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.

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

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!

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

## Question | ## Answer |

1. Question 1 - A monkey key-ring costs 95p, a teddy bear costs £1.80 and a mug costs £2.45. Mrs Jones has £20 to spend of presents. She buys 4 mugs and 3 teddy bears. What is the greatest number of key-rings she can buy? | 5key-rings |

2. Question 2 - The perimeter of a rectangle is 33 metres. One of the smallest sides is 3.6metres long. Find the length of longest side of the rectangle. | 11.1 |

3. Question 3 - Des has two bags of sweets. Each bag contains only lime and strawberry sweets. There are 20 sweets in each bag. In the first bag there is 1 lime sweet for every 3 strawberry. In the second bag there are 2 limes sweets for every 3 strawberry. How many more lime sweets are there in the second bag? | 3 |

4. Question 4 – Louise is thinking of a number. It is less than 50. It is a 2-digit number. 3 is a factor of this number. The sum of its digits is one third of the number. What number is Louise thinking of? | 27 |

5. Question 5 – Sarah has some cookies in a jar. In January she eats 5/8 of the cookies. There are 12 cookies left in the jar. How many were in the jar at the start? | 32cookies |

6. Question 6 – Sally multiplies a number by 100. Her answer has three digits. The hundreds and ones digit are the same. The sum of the digits is 10. What number could Sally have started with? | 1.81/2.62/3.43/4.24 |

7. Question 7 – A plank of wood is 4.6 metres long. Three lengths of wood are cut from the plank (1 1/4m, 165cm and 390mm) How much wood is left? | 1.31m |

8. Question 8 – Filip buys 4 strawberry cupcakes and 1 chocolate cupcake. Filip paid £3.70. A chocolate cupcake costs 25 pence more than a strawberry one. How much does a chocolate cupcake cost? | 94p |

9. Question 9 – A square and a rectangle are joined together (side by side) The perimeter of the shape is 70cm. The area of the square is 121cm2. What is the area of the rectangle? | 143cm2 |

10. Question 10 – Two friends buy some chocolate bars. Each bar cost £1.18. There is a special offer on (Buy one bar, get a second half price) They buy 5 bars and split the cost equally. How much do they each pay? | 2.36 |

11. Question 11 – A 5p coin has thickness of 1.6mm. Jake makes a tower of 5p coins worth 90p.What is the height of the coins in cm? | 2.88cm |

12. Question 12 – A shop owner buys oranges in boxes of 5. She buys 8 boxes of oranges. The cost of each box is £2.40. The owner sells the oranges separately. She sells them for 70p each. By the end of the week she sells 9/10 of the oranges. How much profit has she made? | 6pound |

13. What answer does Jamie get is she divides the same number by 15? | 4 |

14. Question 14 – One egg and one slice of toast costs £1.94. Three eggs and two slices of toast costs £5.How much does one slice of toast cost? | 82p/1.12toast |

15. Question 15 – What is 252 minutes in hours and minutes? | 4hr12min |

16. Question 16 – One gram of silver costs £17.92. What is the cost of half a kilogram of silver? | 8960 |

17. Question 17 – On Saturday, Laura reads 3/5 of her book. On Sunday, she reads the remaining 60 pages to finish the book. How many pages are there in Laura’s book? | 150pages |

18. Question 18 – A box contains 170 crayons. 5 children each take 8 crayons. How many crayons are left in the box? | 130crayons |

19. Question 19 – Using the number 3847.65 Which digit is in the hundreds place? Which digit is in the ones place? Which digit is in the hundredths place? | 8/7/5 |

20. Question 20 – What is 45% of 460? | 207 |

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