Rationalising the Denominator (Tick or Trash)

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NumberLoving

Rationalising the Denominator (Tick or Trash)

Test your students’ ability to spot mistakes and develop their understanding with this activity. Pupils are given two different answers to a question and have to determine which is correct. They then have to explain what misconception has led to the incorrect answer.
This resource includes increasingly difficult questions on rationalising the denominator. Questions start with rationalising the denominator where the denominator is its lowest, to denominators that can be simplified. Later questions involve rationalising the denominators by using the conjugate pair. Full instructions, ideas extension, and a solution are provided in the resource - what more could you need?
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We hope you enjoy using this resource with your students, we would love to hear how it went. Get in touch via the links below.
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Created: Sep 28, 2016

Updated: Nov 14, 2018

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