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QR Challenge: Rates, Ratios and Percents

Created using the ClassTools QR Treasure Hunt Generator

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. Shelby purchased a coat for $101.50 that was regularly priced at $145, not including tax. What percent did Shelby save by purchasing the coat on sale?30%
2. An 8-ounce cup of gourmet coffee costs $4.50. If the unit rate remains the same, how much would 3 quarts of coffee cost?$54
3. Tan's electricity bill for the month of August was $267.00. His September bill showed a 2% increase from his August bill. In October, his bill decreased 8% from the amount he was billed in August. How much did Tan spend on electricity over the tree-month period?$784.98
4. Holly and her best friends go dinner. Their total bill is $31.84. They use a coupon for 15% of the total. If they split the bill evenly, how much money will each person owe, to the nearest cent?$9.02
5. While completing a practice test online, M'Lea answered 6 out of 20 questions incorrectly. If the ratio of incorrect to total questions remains constant, how many questions should M'Lea answer correctly out of 30 questions?21 questions
6. Jahleel earns $12.75 per hour plus 4% commission on his furniture sales. During a six-hour shift, Jahleel made four sales. The sales were for $1200, $2350, $975, and $375. How much money did Jahleel earn during his shift?$272.50
7. Orlando buys a shirt for $15 and a pair of jeans for $32.50. If the sales tax is 8%, what is the total price Orlando pays for the items?$43.70
8. Jasmyn and Roselyn compete in a race. At the beginning of the race, Jazmyn runs at a rate of 6 miles per hour, and Roselyn runs at a rate of 6.2 miles per hour. Toward the end of the race, Jasmyn increases her speed to 6.6 miles per hour.If Roselyn increases her speed by the same percent as Jasmyn, how fast is she running at the end of the race?6.82 mph
9. Harmon's Jewelry Store receives a shipment of 500 jewelry pieces, but 15 pieces are damaged. At this rate, if Mrs. Harmon places an order for 5,000 jewelry pieces, how many should she expect to be damaged?1656 pieces
10. Last year, the seventh-grade enrollment at Main Middle School was 612 students. This year, the enrollment dropped to 489 students due to the opening of a new middle school. What is the percent of change in enrollment at Main Middle School from last year to this year?-20.1%

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Shelby_purchased_a_coat_for_$101.50_that_was_regularly_priced_at_$145,_not_including_tax.__What_percent_did_Shelby_save_by_purchasing_the_coat_on_sale?

Question 1 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=An_8-ounce_cup_of_gourmet_coffee_costs_$4.50.__If_the_unit_rate_remains_the_same,_how_much_would_3_quarts_of_coffee_cost?

Question 2 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Tan's_electricity_bill_for_the_month_of_August_was_$267.00.__His_September_bill_showed_a_2%_increase_from_his_August_bill.__In_October,_his_bill_decreased_8%_from_the_amount_he_was_billed_in_August.__How_much_did_Tan_spend_on_electricity_over_the_tree-month_period?

Question 3 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Holly_and_her_best_friends_go_dinner.__Their_total_bill_is_$31.84._They_use_a_coupon_for_15%_of_the_total.__If_they_split_the_bill_evenly,_how_much_money_will_each_person_owe,_to_the_nearest_cent?

Question 4 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=While_completing_a_practice_test_online,_M'Lea_answered_6_out_of_20_questions_incorrectly.__If_the_ratio_of_incorrect_to_total_questions_remains_constant,_how_many_questions_should_M'Lea_answer_correctly_out_of_30_questions?

Question 5 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Jahleel_earns_$12.75_per_hour_plus_4%_commission_on_his_furniture_sales.__During_a_six-hour_shift,_Jahleel_made_four_sales.__The_sales_were_for_$1200,_$2350,_$975,_and_$375.__How_much_money_did_Jahleel_earn_during_his_shift?

Question 6 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Orlando_buys_a_shirt_for_$15_and_a_pair_of_jeans_for_$32.50.__If_the_sales_tax_is_8%,_what_is_the_total_price_Orlando_pays_for_the_items?

Question 7 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Jasmyn_and_Roselyn_compete_in_a_race.__At_the_beginning_of_the_race,_Jazmyn_runs_at_a_rate_of_6_miles_per_hour,_and_Roselyn_runs_at_a_rate_of_6.2_miles_per_hour.__Toward_the_end_of_the_race,_Jasmyn_increases_her_speed_to_6.6_miles_per_hour.If_Roselyn_increases_her_speed_by_the_same_percent_as_Jasmyn,_how_fast_is_she_running_at_the_end_of_the_race?

Question 8 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Harmon's_Jewelry_Store_receives_a_shipment_of_500_jewelry_pieces,_but_15_pieces_are_damaged.__At_this_rate,_if_Mrs._Harmon_places_an_order_for_5,000_jewelry_pieces,_how_many_should_she_expect_to_be_damaged?

Question 9 (of 10)

 



Rates, Ratios and Percents: QR Challenge

https://www.classtools.net/QR/decode.php?text=Last_year,_the_seventh-grade_enrollment_at_Main_Middle_School_was_612_students.__This_year,_the_enrollment_dropped_to_489_students_due_to_the_opening_of_a_new_middle_school.__What_is_the_percent_of_change_in_enrollment_at_Main_Middle_School_from_last_year_to_this_year?

Question 10 (of 10)