Rationalising the denominator (10A)
Indices and surds
Essential Mathematics Year 10
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  Learning Objectives
  Recap of past learning
  Recap: Multiplying a surd by itself
  Multiplying a fraction by a number which doesn't change the size of the fraction?
  One can take many forms
  Rationalising the denominator

This video is another in the Year 10 Advanced course looking at surds. Having looked at how to add, subtract, multiply and divide them I finish this video looks at what it means to rationalise the denominator. Convention states that we're not permitted to have a surd on the bottom of a fraction and so we use a simple, but effective, trick to help "get rid of the the surd". There are a number of examples throughout this video all explained using clear and easy to understand language.

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maths tutorials year 10 maths grade 10 maths year 10 advanced maths advanced maths rationalising the denominator rationalizing the denominator how do I rationalise the denominator removing surds from the bottom of fractions maths help rationalize the denominator and simplify