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QR Challenge: Topic 2 Review

Created using the ClassTools QR Treasure Hunt Generator

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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. 1. Use mental math to add 67 + 28 95
2. 2. Use mental math to add 130 + 470 600
3. 3. Use mental math to add 35 + 16 + 6 55
4. 4. Use mental math to add 8.6 + 23.4 + 1.4 33.4
5. 5. Use mental math to add 24.1 + 1.2 + 8.8 34.1
6. 6. Use mental math to add 127 + 9.9 136.9
7. 7. Use mental math to add 2.2 + 1.8 + 8.2 12.8
8. 8. Use mental math to add 86 + 4.9 90.9
9. 9. Use a number line to round to the tens place- 67,901 67,900
10. 10. Use a number line to round to the ten-thousands place- 99,102 100,000
11. 11. Use a number line to round to the hundreds place- 10,245 10,200
12. 12. Use a number line to round to the hundreds place- 734 700
13. 13. Use a number line to round to the tens place- 9,145 9,150
14. 14. Use a number line to round to the thousands place- 13,023 13,000
15. 15. Use a number line to round to the hundreds place- 15,789 15,800
16. 16. Use a number line to round to the thousands place-26,435 26,000
17. 17. Use a number line to round to the tenths place- 45.398 45.4
18. 18. Use a number line to round to the tenths place- 0.153 0.2
19. 19. Use a number line to round to the hundredths place- 0.625 0.63
20. 20. Use a number line to round to the ones place- 8.978 9
21. 21. Use a number line to round to the tenths place- 5.739 5.7
22. 22. Use a number line to round to the ones place- 79.5 80
23. 23. Use a number line to round to the hundredths place- 3.645 3.65
24. 24. Use a number line to round to the ones place- 12.48 12
25. 25. 58 + 3.6 61.6
26. 26. 40.5 + 22.3 62.8
27. 27. 92.1 - 32.6 59.5
28. 28. 52.7 - 36.9 15.8
29. 29. 34.587 + 21.098 55.685
30. 30. 32.7 - 2.328 30.372
31. 31. 42.89 + 8.2 51.09
32. 32.13.8 - 3.8 10.1
33. 33. Use a model to add 0.02 + 0.89 0.91
34. 34. Use a model to subtract 0.67 - 0.31 0.36
35. 35. Use a model to add 0.34 + 0.34 0.68
36. 36. Use a model to subtract 0.81 - 0.78 0.03
37. 37. Use a model to subtract 1.86 - 0.95 0.91
38. 38. Use a model to add 0.6 + 0.49 1.09
39. 39. Use a model to add 0.22 + 0.35 0.57
40. 40. Use a model to subtract 0.61 - 0.42 0.19
41. 41. Mikayla earned $23.50 helping her neighbor with yard work. She spent $7.95 on some school supplies. How much money does she have left? Mikayla has $15.55 left.
42. 42. Matt has 48 baseball cards. Sophia has 62 baseball cards. How many more baseball cards does Sophia have than Matt? Sophia has 14 more cards than Matt.
43. 43. A mason needs 22 bricks to make a step to the porch.So far he has carried 15 to the work site. How many more bricks must he carry? He needs to carry 7 more bricks to the work site.
44. 44. Dayana picked apples for 2 hours. She picked 28 apples in the first hour, and 21 the second hour. How many apples did Dayana pick? Dayana picked 49 apples.
45. 45. Dixon bought a pack of pencils and then gave 12 away. He now has 24 left. How many pencils were in the pack of pencils that Dixon bought? There were 36 pencils in the pack.
46. 46. Ruby is baking 25 muffins for the bake sale. She has already baked 12. How many more does she need to bake? Ruby needs to bake 13 more muffins.
47. 47. Stephanie ran 2 miles each day for 14 days. How many miles did she run in 14 days? Stephanie ran 28 miles in 14 days.
48. 48. Janet saved 22 dollars one month and 39 dollars the next month. How much money has Jante saved in the two months? Janet has saved 61 dollars all together.
49. B1. What is 2.904 rounded to the nearest hundredth? 2.9
50. B2. Use mental math to add 25.25 + 4.6 + 4.75 34.6
51. B3. Use mental math to subtract 66.5 - 24.98 41.52
52. B4. Estimate the sum 79 + 32 110
53. B5. Estimate the sum 2.9 + 3.9 7
54. B6. Estimeat the difference 3,856 - 2,357 2,000
55. B7. Use a model to subtract 1.45 - 0.31 1.14
56. B8. At a flower shop, Teri sees that roses are $3 each, carnations are $4 for 3 flowers, and tulips are $4 for 4 flowers. She buys 3 roses and 3 carnations. She has $20. How much change does Teri get back? Teri will get $7 back in change.

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=1.-Use-mental-math-to-add-67-+-28

Question 1 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=2.-Use-mental-math-to-add-130-+-470

Question 2 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.-Use-mental-math-to-add-35-+-16-+-6

Question 3 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=4.-Use-mental-math-to-add-8.6-+-23.4-+-1.4

Question 4 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=5.-Use-mental-math-to-add-24.1-+-1.2-+-8.8

Question 5 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=6.-Use-mental-math-to-add-127-+-9.9

Question 6 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=7.-Use-mental-math-to-add-2.2-+-1.8-+-8.2

Question 7 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=8.-Use-mental-math-to-add-86-+-4.9

Question 8 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=9.-Use-a-number-line-to-round-to-the-tens-place--67,901

Question 9 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=10.-Use-a-number-line-to-round-to-the-ten-thousands-place--99,102

Question 10 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=11.-Use-a-number-line-to-round-to-the-hundreds-place--10,245

Question 11 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=12.-Use-a-number-line-to-round-to-the-hundreds-place--734

Question 12 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=13.-Use-a-number-line-to-round-to-the-tens-place--9,145

Question 13 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=14.-Use-a-number-line-to-round-to-the-thousands-place--13,023

Question 14 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=15.-Use-a-number-line-to-round-to-the-hundreds-place--15,789

Question 15 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=16.-Use-a-number-line-to-round-to-the-thousands-place-26,435

Question 16 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=17.-Use-a-number-line-to-round-to-the-tenths-place--45.398

Question 17 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=18.-Use-a-number-line-to-round-to-the-tenths-place--0.153

Question 18 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=19.-Use-a-number-line-to-round-to-the-hundredths-place--0.625

Question 19 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=20.-Use-a-number-line-to-round-to-the-ones-place--8.978

Question 20 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=21.-Use-a-number-line-to-round-to-the-tenths-place--5.739

Question 21 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=22.-Use-a-number-line-to-round-to-the-ones-place--79.5

Question 22 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=23.-Use-a-number-line-to-round-to-the-hundredths-place--3.645

Question 23 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=24.-Use-a-number-line-to-round-to-the-ones-place--12.48

Question 24 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=25.-58-+-3.6

Question 25 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=26.-40.5-+-22.3

Question 26 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=27.-92.1---32.6

Question 27 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=28.-52.7---36.9

Question 28 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=29.-34.587-+-21.098

Question 29 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=30.-32.7---2.328

Question 30 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=31.-42.89-+-8.2

Question 31 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=32.13.8---3.8

Question 32 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=33.-Use-a-model-to-add-0.02-+-0.89

Question 33 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=34.-Use-a-model-to-subtract-0.67---0.31

Question 34 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=35.-Use-a-model-to-add-0.34-+-0.34

Question 35 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=36.-Use-a-model-to-subtract-0.81---0.78

Question 36 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=37.-Use-a-model-to-subtract-1.86---0.95

Question 37 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=38.-Use-a-model-to-add-0.6-+-0.49

Question 38 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=39.-Use-a-model-to-add-0.22-+-0.35

Question 39 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=40.-Use-a-model-to-subtract-0.61---0.42

Question 40 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=41.-Mikayla-earned-$23.50-helping-her-neighbor-with-yard-work.-She-spent-$7.95-on-some-school-supplies.-How-much-money-does-she-have-left?

Question 41 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=42.-Matt-has-48-baseball-cards.-Sophia-has-62-baseball-cards.-How-many-more-baseball-cards-does-Sophia-have-than-Matt?

Question 42 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=43.-A-mason-needs-22-bricks-to-make-a-step-to-the-porch.So-far-he-has-carried-15-to-the-work-site.-How-many-more-bricks-must-he-carry?

Question 43 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=44.-Dayana-picked-apples-for-2-hours.-She-picked-28-apples-in-the-first-hour,-and-21-the-second-hour.-How-many-apples-did-Dayana-pick?

Question 44 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=45.-Dixon-bought-a-pack-of-pencils-and-then-gave-12-away.-He-now-has-24-left.-How-many-pencils-were-in-the-pack-of-pencils-that-Dixon-bought?

Question 45 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=46.-Ruby-is-baking-25-muffins-for-the-bake-sale.-She-has-already-baked-12.-How-many-more-does-she-need-to-bake?

Question 46 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=47.-Stephanie-ran-2-miles-each-day-for-14-days.-How-many-miles-did-she-run-in-14-days?

Question 47 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=48.-Janet-saved-22-dollars-one-month-and-39-dollars-the-next-month.-How-much-money-has-Jante-saved-in-the-two-months?

Question 48 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B1.-What-is-2.904-rounded-to-the-nearest-hundredth?

Question 49 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B2.-Use-mental-math-to-add-25.25-+-4.6-+-4.75

Question 50 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B3.-Use-mental-math-to-subtract-66.5---24.98

Question 51 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B4.-Estimate-the-sum-79-+-32

Question 52 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B5.-Estimate-the-sum-2.9-+-3.9

Question 53 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B6.-Estimeat-the-difference-3,856---2,357

Question 54 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B7.-Use-a-model-to-subtract-1.45---0.31

Question 55 (of 56)

 


Topic 2 Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=B8.-At-a-flower-shop,-Teri-sees-that-roses-are-$3-each,-carnations-are-$4-for-3-flowers,-and-tulips-are-$4-for-4-flowers.-She-buys-3-roses-and-3-carnations.-She-has-$20.-How-much-change-does-Teri-get-back?

Question 56 (of 56)