QR Challenge: Multiplying and Dividing Decimals Review
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
- Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
- Bring these devices into the lesson.
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. A relay race covers a distance of 9.45 miles. Each member of the team runs 1.35 miles. How many team members compete in this relay race? | 7
|
2. 2. 2) Joey’s candy label says there are 4.8 servings in the package. If a serving size is 2.3 ounces, how many ounces are in the package? | 11.04
| 3. 3. 3) Anthony went to the store to buy a gift for his 8 friends. He wants to purchase markers which cost $0.72 each. How much will he spend on his eight friends? | 5.76
| 4. 4. 4) There are 3 cups of raisins in a box. A serving of raisins is 0.75 of a cup. How many servings are there in a box of raisins? | 4
| 5. 5. 5) The supermarket is having a sale on apples. They are $0.67 a pound. If Lisa wants to purchase 5 pounds, how much will she spend? | 3.35
| 6. 6. 6) Mia and Max have $8.62 to spend at Target. If each person receives the same amount of money, how much money does each person get to spend at Target? | 4.31
| 7. 7. 7) Cassie is shopping for gifts for her family. She wants to buy 4 t-shirts that cost $7.95 each. How much will it cost to buy the t-shirts? | 31.80
| 8. 8. 8) The cost of a candy bar is $0.75. If Jessica has $5.75 what is the greatest number of candy bars she can purchase? | 7
| 9. 9. 9) Bananas are $0.60 per pound. How many pounds of bananas can you buy with $3.00? | 5
| 10. 10. 10) Rodger paid $4.80 for 5 cans of Pepsi. What is the price of each can? | 0.96
| 11. 11. 11) Julie is on the swim team. One lap in the pool is 0.38 of a mile. How far will she swim if she swims 14 laps? | 5.32
| 12. 12. 3.82 x 4.1 | 15.662
| 13. 13. 95.7 x 8.2 | 784.74
| 14. 14. 5.52 ÷ 2.4 | 2.3
| 15. 15. 84.6 ÷ 4.7 | 18 |
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=1._A_relay_race_covers_a_distance_of_9.45_miles._Each_member_of_the_team_runs_1.35_miles.__How_many_team_members_compete_in_this_relay_race?
Question 1 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=2.__2) Joey’s_candy_label_says_there_are_4.8_servings_in_the_package.__If_a_serving_size_is_2.3_ounces,_how_many_ounces_are_in_the_package?
Question 2 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=3.__3) Anthony_went_to_the_store_to_buy_a_gift_for_his_8_friends.__He_wants_to_purchase_markers_which_cost_$0.72_each.__How_much_will_he_spend_on_his_eight_friends?
Question 3 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=4._4) There_are_3_cups_of_raisins_in_a_box.__A_serving_of_raisins_is_0.75_of_a_cup.__How_many_servings_are_there_in_a_box_of_raisins?
Question 4 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=5.__5) The_supermarket_is_having_a_sale_on_apples.__They_are_$0.67_a_pound.__If_Lisa_wants_to_purchase_5_pounds,_how_much_will_she_spend?
Question 5 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=6.__6) Mia_and_Max_have_$8.62_to_spend_at_Target.__If_each_person_receives_the_same_amount_of_money,_how_much_money_does_each_person_get_to_spend_at_Target?
Question 6 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=7._7) Cassie_is_shopping_for_gifts_for_her_family.__She_wants_to_buy_4_t-shirts_that_cost_$7.95_each.__How_much_will_it_cost_to_buy_the_t-shirts?
Question 7 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=8._8) The_cost_of_a_candy_bar_is_$0.75.__If_Jessica_has_$5.75_what_is_the_greatest_number_of_candy_bars_she_can_purchase?
Question 8 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=9.__9) Bananas_are_$0.60_per_pound.__How_many_pounds_of_bananas_can_you_buy_with_$3.00?
Question 9 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=10.__10) Rodger_paid_$4.80_for_5_cans_of_Pepsi.__What_is_the_price_of_each_can?
Question 10 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=11.__11) Julie_is_on_the_swim_team.__One_lap_in_the_pool_is_0.38_of_a_mile.__How_far_will_she_swim_if_she_swims_14_laps?
Question 11 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=12.__3.82_x_4.1
Question 12 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=13.__95.7_x_8.2
Question 13 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=14.__5.52_÷_2.4
Question 14 (of 15)
Multiplying and Dividing Decimals Review: QR Challenge
https://www.classtools.net/QR/decode.php?text=15.___84.6_÷_4.7
Question 15 (of 15)
