Guitar For Sale

Boy with guitar

On Monday Juan bought a guitar for £6

On Tuesday he sold it for £21

On Wednesday he bought it back for £31

On Thursday he needed money for a football match so he again sold his guitar, this time for £38.

Overall, did Juan make or lose money?

A Mathematics Lesson Starter Of The Day


Topics: Starter | Money

  • J Duhig, Stevenage
  • I LOVE these starters, the book worm one is my recent favourite! I use them almost every day. Thanks!
  • Fahmin Begum Ali, Central Foundation Girls School
  • I love Transum. My teacher starts our maths lesson off with a starter everyday and its great. I would like to suggest that Transum gives more harder starters though. But overall Transum is GREAT!
  • Salif Fonso, WLA , Northolt, Middlesex
  • When he started without a guitar he had £7 in his pocket. At th end of it all(without the guitar once more) he had £14 in his pocket. That means he made £7 not £14 as the answer section states.
  • Mr McLaughlin And Primary 5, St Bernadette's Primary School, Motherwell
  • We found this quite challenging but worked out the answer in the end. It was good fun and it taught us about profit and loss. It was like being in The Apprentice!
  • Transum,
  • Thanks to everyone for their comments. It may be worth mentioning that each time this page is loaded a different set of figures is given for the guitar transactions. That means that you could use this starter more than once with the same class!
  • Miss Robbins, Green Hill Lower
  • This starter was really engaging... I found it was just the right length and the right amount of time it took to answer. In this time the children really enjoyed doing it. As our class isn't top, we did spend a little longer than other classes would have but it was still a great aspect to the lesson. I found that this was great homework to! I one of these starters for homework to take 10 minutes as everybody came in the next day saying it was a great homework and they would love to do it again, now we have a brain question every week ( one of your starters! ) I even found that with these there great fun for the kids to do as an extension in class. These starters also helped me find the people who were struggling and I did some different tasks for them to do (from Transum!) and they loved it. They still love maths! Your website makes people love maths of all ages!

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Globe of Flags

This activity is suitable for students of mathematics all around the world. Use the button below to change the currency symbol used to make it more relevant to your students. You may wish to choose an unfamiliar currency to extend your students' experience.

Globe of Flags


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Rubiks Cube Puzzle

Apple iPad Pro

The analytics show that more and more people are accessing Transum Mathematics via an iPad as it is so portable and responsive. The iPad has so many other uses in addition to solving Transum's puzzles and challenges and it would make an excellent gift for anyone.

The redesigned Retina display is as stunning to look at as it is to touch. It all comes with iOS, the world's most advanced mobile operating system. iPad Pro. Everything you want modern computing to be. more...

Before giving an iPad as a Christmas gift you could add a link to iPad Maths to the home screen.

Math with Bad Drawings

I had been tutoring the wonderful Betsy for five years. When the day came for our last ever session together before the end of her Year 13, I received this beautiful book as a gift of appreciation.

This a very readable book by Ben Orlin. I'm really enjoying the humour in the writing and the drawings are great.

Ben Orlin answers maths' three big questions: Why do I need to learn this? When am I ever going to use it? Why is it so hard? The answers come in various forms-cartoons, drawings, jokes, and the stories and insights of an empathetic teacher who believes that mathematics should belong to everyone.

Online Maths Shop

Laptops In Lessons

Teacher, do your students have access to computers?
Do they have iPads or Laptops in Lessons?

Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).

Laptops In Lessons

Here a concise URL for a version of this page without the comments.

Here is the URL which will take them to a related student activity.

Student Activity


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