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QR Challenge: Adding & Subtracting Fractions with Unlike Denominators

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. 1/12 + 7/9 = a31/36
2. 1/3 + 1/5 = z4/9
3. 1/2 + (1/8 + 1/8) = d1/4
4. 3/4 + (1/4 - 1/6) = f5/6
5. (2/5 + 1/5) - 3/10 = r3/10
6. The table shows the amounts of two ingredients Delaney used to make a snack mix. She ate 5/8 cup of the snack mix for lunch. How much of the mix is left? (3/4 + 2/3) - 5/8 = 19/24 cup
7. A plumber is fitting a water pipe that is 3/4 foot long on to a water pipe that is 2/12 foot long. How long will the finished pipe be? A 11/12 foot
8. Mrs. Rapp is making soup today for all the teachers :) To make the broth she combines 2/5 cup of vegetable stock and 2/3 cup of chicken stock. Boiling the broth causes 1/4 cup of the liquid to evaporate. How much broth is left after it is boiled?(2/5 + 2/3) - 1/4 = 49/60 cup

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q1/8:

1/12 + 7/9 = a&choe=UTF-8

Question 1 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q2/8:

1/3 + 1/5 = z&choe=UTF-8

Question 2 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q3/8:

1/2 + (1/8 + 1/8) = d&choe=UTF-8

Question 3 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q4/8:

3/4 + (1/4 - 1/6) = f&choe=UTF-8

Question 4 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q5/8:

(2/5 + 1/5) - 3/10 = r&choe=UTF-8

Question 5 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q6/8:

The table shows the amounts of two ingredients Delaney used to make a snack mix. She ate 5/8 cup of the snack mix for lunch. How much of the mix is left?&choe=UTF-8

Question 6 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q7/8:

A plumber is fitting a water pipe that is 3/4 foot long on to a water pipe that is 2/12 foot long. How long will the finished pipe be?&choe=UTF-8

Question 7 (of 8)

 



Adding & Subtracting Fractions with Unlike Denominators: QR Challenge

https://www.classtools.net/QR/decode.php?text=Adding & Subtracting Fractions with Unlike Denominators
Q8/8:

Mrs. Rapp is making soup today for all the teachers :) To make the broth she combines 2/5 cup of vegetable stock and 2/3 cup of chicken stock. Boiling the broth causes 1/4 cup of the liquid to evaporate. How much broth is left after it is boiled?&choe=UTF-8

Question 8 (of 8)