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. 1. Jack has £400 He spends 35% of his money on a new bike.How much does Jack spend on his new bike? | £140 |

2. 2. A box contains 2.6 kg of washing powder.Jack uses 65 grams of powder for each wash. He uses all the powder.How many washes did Jack do? | 40 |

3. 3. A book has 276 pages. Amina has read 1/3 of the book.How many pages are left for Amina to read? | 184 |

4. 4. In March, Ken collects 2, 3 or 4 eggs each day from his hens. In the first 20 days, Ken collects 57 eggs altogether. There are 31 days in March.What is the greatest number of eggs Ken can collect in March? | 101 |

5. 5. Amina posts three large letters.The postage costs the same for each letter.She pays with a £ 20 note.Her change is £14.96 What is the cost of posting one letter? | £1.68 |

6. 6. Adam buys 6 bags of white balloons.Chen buys 3 bags of red balloons.Adam says,‘I have four times as many balloons as Chen.’Explain why Adam is correct | An explanation that shows Adam has four times as many balloons as Chen. |

7. 7. 3 pineapples cost the same as 2 mangoes.One mango costs £1.35 How much does one pineapple cost? | £0.90 |

8. 8. Dev thinks of a whole number. He multiplies it by 4. He rounds his answer to the nearest 10. The result is 50. Write all the possible numbers that Dev could have started with. | 12 and 13 |

9. 9. Which two numbers that add together to equal 1/4. 0.05 0.23 0.2 0.5 | 0.2 and 0.05 |

10. 10.Write all the common multiples of 3 and 8 that are less than 50 | 24and48 |

11. 11. Write the number that is five less than ten million. | 9,999,995 |

12. 12.Write these numbers in order, starting with the smallest.0.78, 0.607, 5.6 0.098, 4.003 | 0.098, 0.607,0.78, 4.003, 5.6 |

13. 14. A toy shop orders 11 boxes of marbles.Each box contains 6 bags of marbles. Each bag contains 45 marbles. How many marbles does the shop order in total? | 2,970. |

14. 15. Lara chooses a number less than 20 She divides it by 2 and then adds 6. She then divides this result by 3. Her answer is 4.5. What was the number she started with? | 15 |

15. 16. Circle two numbers that multiply together to equal 1 million. 200 2,000 5,000 50,000 | 200, 5000 |

16. How much does each child pay? | £5.75 |

17. 18.One gram of gold costs £32.94. What is the cost of half a kilogram of gold? | £16,470 |

18. 19. Two decimal numbers add together to equal 1. One of the numbers is 0.007 What is the other number? | 0.993 |

19. 20.Calculate 55% of 640 | 352 |

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