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QR Challenge: Operations with Decimals

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. Alan is connecting three garden hoses to make one longer hose. The green hose is 6.25 feet long, the orange hose is 5.755 feet long, and the black hose is 6.5 feet long. Find the actual total length of all three hoses when connected.18.505
2. It is x miles from Jamestown to Huntley and y miles from Huntely to Grover. How many miles is it from Jamestown to Grover? To find out, evaluate x + y if x =4.23 and y= 16.87621.106
3. Colin is filling up 4.5-ounce bottles with lavender bubble bath that he made for gifts. He was able to fill 7.5 bottles. How many ounces of bubble bath did he make?33.75
4. Jennifer is buying new school clothes. The items she wants to buy add up to $132.50 before sales tax. Sales tax is calculated by multiplying the total amount by 0.08. What is the amount of sales tax for the items she purchased?10.6
5. Ana bought a van that holds 20.75 gallons of gas and gets and average of 15.5 miles per gallon. How many miles can she expect to drive on a full tank of gas?321.625
6. Ishi makes #8.50 an hour rolling sushi at Kyoto Japenses Restaurant. His paycheck shows that he worked 20.88 hours over the past two weeks. How much did Ishi make before taxes were taken out?177.48
7. Shane wants to figure out what grade he is getting in math. His test scores were 85.6, 78.5, 92.5, 67, and 83.7. What was his average test score?81.46
8. It took Steve and his construction company 8 months to build a house. After expenses, he was left with $24, 872.67. How much did Steve make per month? Round your answer to the nearest dollar.3109
9. The Martinez family drove 48.7 miles to the river. It took them 1.2 hours to get there. How fast was Mr. Martinez driving in terms of miles per hour? Round to the nearest whole number.41
10. Gabriella has 14.25 cups of cupcake batter. if she uses 0.75 cups of batter for each cupcake, how many cupcakes can she make?19
11. Isabella runs 4 days a week. On Mondays she runs 2.5 miles, on Tuesdays she runs 4.6 miles, on Wednesdays she runs 6.75 miles and on Thursdays she runs 4.8 miles. What is the average distance that Isabella run each day? Round to the nearest hundredth of a mile.4.66
12. Katherine spends $1089.72 each month for rent and supplies to run her hair salon. If she charges $18 for a haircut how many haircuts must Katherine do to cover her monthly expneses. Round your answer to the nearest haircut.61

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q1/12:

Alan is connecting three garden hoses to make one longer hose. The green hose is 6.25 feet long, the orange hose is 5.755 feet long, and the black hose is 6.5 feet long. Find the actual total length of all three hoses when connected.&choe=UTF-8

Question 1 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q2/12:

It is x miles from Jamestown to Huntley and y miles from Huntely to Grover. How many miles is it from Jamestown to Grover? To find out, evaluate x + y if x =4.23 and y= 16.876&choe=UTF-8

Question 2 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q3/12:

Colin is filling up 4.5-ounce bottles with lavender bubble bath that he made for gifts. He was able to fill 7.5 bottles. How many ounces of bubble bath did he make?&choe=UTF-8

Question 3 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q4/12:

Jennifer is buying new school clothes. The items she wants to buy add up to $132.50 before sales tax. Sales tax is calculated by multiplying the total amount by 0.08. What is the amount of sales tax for the items she purchased?&choe=UTF-8

Question 4 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q5/12:

Ana bought a van that holds 20.75 gallons of gas and gets and average of 15.5 miles per gallon. How many miles can she expect to drive on a full tank of gas?&choe=UTF-8

Question 5 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q6/12:

Ishi makes #8.50 an hour rolling sushi at Kyoto Japenses Restaurant. His paycheck shows that he worked 20.88 hours over the past two weeks. How much did Ishi make before taxes were taken out?&choe=UTF-8

Question 6 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q7/12:

Shane wants to figure out what grade he is getting in math. His test scores were 85.6, 78.5, 92.5, 67, and 83.7. What was his average test score?&choe=UTF-8

Question 7 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q8/12:

It took Steve and his construction company 8 months to build a house. After expenses, he was left with $24, 872.67. How much did Steve make per month? Round your answer to the nearest dollar.&choe=UTF-8

Question 8 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q9/12:

The Martinez family drove 48.7 miles to the river. It took them 1.2 hours to get there. How fast was Mr. Martinez driving in terms of miles per hour? Round to the nearest whole number.&choe=UTF-8

Question 9 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q10/12:

Gabriella has 14.25 cups of cupcake batter. if she uses 0.75 cups of batter for each cupcake, how many cupcakes can she make?&choe=UTF-8

Question 10 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q11/12:

Isabella runs 4 days a week. On Mondays she runs 2.5 miles, on Tuesdays she runs 4.6 miles, on Wednesdays she runs 6.75 miles and on Thursdays she runs 4.8 miles. What is the average distance that Isabella run each day? Round to the nearest hundredth of a mile.&choe=UTF-8

Question 11 (of 12)

 



Operations with Decimals : QR Challenge

https://www.classtools.net/QR/decode.php?text=Operations with Decimals
Q12/12:

Katherine spends $1089.72 each month for rent and supplies to run her hair salon. If she charges $18 for a haircut how many haircuts must Katherine do to cover her monthly expneses. Round your answer to the nearest haircut.&choe=UTF-8

Question 12 (of 12)