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. $5.06 - $3.75 | $1.31 |

2. 2. 3,392 + 8,919 | 12,311 |

3. 3. Miss Tate spent $8.95 at the pumpkin patch. Mrs. Boyce spent $14.50. How much did they spend all together? | $5.55 |

4. 4. Round 998,400 to the nearest ten-thousand. | 900,000 |

5. 5. 77,312 + 42,905 | 120,217 |

6. 6. Clara collected 343 pieces of candy when she went trick-or-treating. Her Aunt took 157 pieces away (they were her favorite). How many pieces did she have left? | 186 pieces of candy |

7. 7. 78,493 - 46,274 | 32,219 |

8. 8. Cathy and Jennifer went trick-or-treating. They collected 212 Tootsie Rolls, 395 pieces of chocolate, and 198 suckers. About how much candy do they have in all? (estimate) | 800 pieces of candy |

9. 9. A 10 oz pumpkin costs $10.50. Dennie has $7.95. How much more does he need to buy the pumpkin? | $2.55 |

10. 10.On Tuesday, Eckert's sold 335 apples and 247 pumpkins. How many more apples than pumkins were sold? | 88 apples |

11. 11. Find the missing factor: __ x 7 = 42 | 6 |

12. 12. Find the missing factor: 9 x __ = 72 | 8 |

13. 13. 142 trick-or-treaters came to my door on Halloween. Each were given a treat bag with 6 pieces of candy in it. How many pieces of candy were given away? | 852 pieces of candy |

14. 14. 56 people work at the haunted house. 7 people work in each room. How many rooms are in the haunted house? | 8 people |

15. 15. Miss Tate has 150 pieces of candy. She put the same number of pieces of candy into each of the 23 treat bags. How many pieces of candy did she put into each bag? How many pieces did she have left over? | 149 in each bag, 5 left over |

16. 16. 42 x 44 | 1848 |

17. 17. 73 x 53 | 3,869 |

18. 18. 43 x 37 | 1,591 |

19. 19. 668 divided by 19 | 35 R3 |

20. 20. 847 divided by 32 | 26 R15 |

21. 21. 823 divided by 48 | 17 R7 |

22. 22. 549 x 125 | 68,625 |

23. 23. 159 x 357 | 56,763 |

24. 24. 951 x 753 | 716,103 |

25. 25. Look at the group of numbers. Rearrange then in the correct order so that when you subtract, the difference equals 68. There's only one correct answer. 31013 | 101-33=68 |

26. 26. Look at the group of numbers. Rearrange then in the correct order so that when you subtract, the difference equals 68. There's only one correct answer. 21542 | 122-54=68 |

27. 27. How many humans had walked on the moon by 1972? Add the numbers from this list that divide evenly into 16 to get the answer: 10, 5, 4, 8 | 4+8=12 |

28. 28. Arizona was which number state admitted to the Union? Add the numbers from this list that are evenly divisible by 6 to get the answer: 44, 12, 20, 36 | 12+36=48 |

29. 29. Use digits to write the number three hundred fort-five million, six hundred fourteen thousand, seven hundred eighty four. | 345,614,784 |

30. 30.Use words to name the mixed number 7 1/10. | seven and one tenth |

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