teaching resource

Decimals and Percentages Maths Investigation – Prepare to Party!

Teach Starter Publishing
PDF | 13 pages | Years: 5 - 6

A mathematics investigation about decimals and percentages, embedded in a real-world context.

This open-ended mathematics investigation has been designed to deepen students’ understanding of decimals and percentages.

In this investigation, students must use their knowledge and understanding of decimals and percentages to plan an end of year celebration for their class. The party plan must adhere to a budget agreed to by the class, as well as a set of conditions laid down by the teacher. The students must use the party supplies catalogue provided to select food, party decorations and serving supplies for the celebration, then record all costings on the worksheets provided.

This teaching resource includes:

  • teacher notes, detailing a range of important information about the investigation
  • answers for all discount calculations
  • a detailed description of the investigation for students, including step-by-step instructions
  • party supplies catalogue
  • various recording worksheets and party planning templates
  • a checklist for students
  • reflection questions.

Read more about using this resource to plan a real party in our blog Real World Mathematics | Exploring Maths with an End of Term Party.


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  • Hannah Sargent

    Your example for the sale price on Party decorations and serving supplies is incorrect. (Should be $4.50 instead of $5.00)

    • Emilia Leonardi

      Also the price on the flier for streamers is $2 but the worksheet says $1.

    • Stephanie (Teach Starter)

      Thank you so much for pointing this out to us, Hannah! This error has now been corrected and the updated resource is available for download. Have a lovely weekend!