Rationalising a single term denominator
I can use the technique of rationalising the denominator to transform a fraction to an equivalent fraction.
Rationalising a single term denominator
I can use the technique of rationalising the denominator to transform a fraction to an equivalent fraction.
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Lesson details
Key learning points
- Fractions should be given in their simplest term.
- The denominator should be written as simply as possible.
- Using equivalent fractions, you may be able to write the denominator without a surd.
Keywords
Surd - A surd is an irrational number expressed as the root of a rational number.
Common misconception
Pupils may think the simplest form means a simplified surd as a denominator.
A fraction is not fully simplified if the denominator contains a surd term and must be rationalised as is convention.
To help you plan your year 10 maths lesson on: Rationalising a single term denominator, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 maths lesson on: Rationalising a single term denominator, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 4 maths lessons from the Surds unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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