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QR Challenge: Adding and Subtracting Fractions

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. 1/4 + 1/41/2
2. 5/6 - 4/61/6
3. 9/10 + 5/101 2/5
4. 12/3 - 5/32 1/3
5. Rugged Carpet Company installed 7/8 inch carpet over 3/8 inch padding. What was the combined thickness?1 1/4 inches
6. Bert walked 9/10 miles to Ernie's house. Then Bert and Ernie walked 7/10 mile to the park. How far did Bert walk altogether?1 3/5 miles
7. Jill made sauce in cooking class. She used 1/12 cup of milk, 8/12 cup of cream, and 3/12 cup of water. How much less water was used than milk and cream combined?7/12 cups of water
8. Yolanda rode a bicycle 3 3/10 miles on Monday, 5 8/10 miles on Wednesday, and 12 9/10 miles on Friday. What is the total distance she rode the bicycle on those three days?22 miles
9. Jerry brought 3 2/3 yards of terry cloth, 5 1/3 yards of velour and 4 7/3 yards of polyester. What was the total yardage of material he purchased?15 1/3 yards
10. Sandra is building a dog house and needs boards measuring 45 1/8 inches , 56 3/8 inches and 17 7/8 inches. what is the total length of board needed?119 3/8 inches
11. Diane went fishing with her father. She caught a fish that weighed 16 11/20 lbs. Her father caught a fish that weighed 11 6/20 lbs. How much heavier was Diane's fish? 5 1/4 lbs.
12. A plumber had a pipe 17 18/20 in. long. He had to cut 9 6/20 in. off to fix the sink. How long is the remaining piece of pipe?8 3/5 in.
13. Last week, a pitcher pitched 7 2/3 innings on Monday and 5 2/3 innings on Friday. How many innings did he pitch altogether?13 1/3 innings
14. It took Ms. Salinas 5 3/4 hours to climb to the top of a mountain. It took 3 1/4 hour to climb down.(No, she did not roll down!) If she spent 2 2/4 hours at the top to eat her lunch (and dinner), how long did the climb take?11 1/2 hours

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q1/14:

1/4 + 1/4&choe=UTF-8

Question 1 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q2/14:

5/6 - 4/6&choe=UTF-8

Question 2 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q3/14:

9/10 + 5/10&choe=UTF-8

Question 3 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q4/14:

12/3 - 5/3&choe=UTF-8

Question 4 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q5/14:

Rugged Carpet Company installed 7/8 inch carpet over 3/8 inch padding. What was the combined thickness?&choe=UTF-8

Question 5 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q6/14:

Bert walked 9/10 miles to Ernie's house. Then Bert and Ernie walked 7/10 mile to the park. How far did Bert walk altogether?&choe=UTF-8

Question 6 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q7/14:

Jill made sauce in cooking class. She used 1/12 cup of milk, 8/12 cup of cream, and 3/12 cup of water. How much less water was used than milk and cream combined?&choe=UTF-8

Question 7 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q8/14:

Yolanda rode a bicycle 3 3/10 miles on Monday, 5 8/10 miles on Wednesday, and 12 9/10 miles on Friday. What is the total distance she rode the bicycle on those three days?&choe=UTF-8

Question 8 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q9/14:

Jerry brought 3 2/3 yards of terry cloth, 5 1/3 yards of velour and 4 7/3 yards of polyester. What was the total yardage of material he purchased?&choe=UTF-8

Question 9 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q10/14:

Sandra is building a dog house and needs boards measuring 45 1/8 inches , 56 3/8 inches and 17 7/8 inches. what is the total length of board needed?&choe=UTF-8

Question 10 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q11/14:

Diane went fishing with her father. She caught a fish that weighed 16 11/20 lbs. Her father caught a fish that weighed 11 6/20 lbs. How much heavier was Diane's fish?&choe=UTF-8

Question 11 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q12/14:

A plumber had a pipe 17 18/20 in. long. He had to cut 9 6/20 in. off to fix the sink. How long is the remaining piece of pipe?&choe=UTF-8

Question 12 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q13/14:

Last week, a pitcher pitched 7 2/3 innings on Monday and 5 2/3 innings on Friday. How many innings did he pitch altogether?&choe=UTF-8

Question 13 (of 14)

 



Adding and Subtracting Fractions: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding and Subtracting Fractions
Q14/14:

It took Ms. Salinas 5 3/4 hours to climb to the top of a mountain. It took 3 1/4 hour to climb down.(No, she did not roll down!) If she spent 2 2/4 hours at the top to eat her lunch (and dinner), how long did the climb take?&choe=UTF-8

Question 14 (of 14)