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Example: multiplying by 25

Example: multiplying by 25
Close-up image of a woman writing in a notebook, with glasses and mobile phone on the table
© University of Southampton

Study the following example that uses the Bar Model method for mentally multiplying by 25.

  • What steps are involved in completing the task?

  • Was there any prior knowledge you needed?

  • What role do the bars play in this example?

Example task using the bar model method to multiply a number with 25. There is a PDF with the full task at the bottom of the page

If you need some more explanation, you can watch a video about it in the next step.

These tasks come from: ‘Max Maths Primary – A Singapore Approach’ Student’s Book 5 p.87–88 © Macmillan Publishers Limited and Star Publishing Pte Ltd 2018

‘Max Maths Primary – A Singapore Approach’ is specifically designed for International and English-medium schools that are following the Cambridge Primary maths curriculum framework.

© University of Southampton
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