Explain how to identify a prime factor of a number
I can explain how to identify a prime factor of a number.
Explain how to identify a prime factor of a number
I can explain how to identify a prime factor of a number.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- All numbers can be written as a product of 2 or more prime numbers.
- A prime factor is a factor of a number which is prime.
Keywords
Factor - A factor is a whole number which exactly divides another whole number.
Prime factor - A prime factor is a factor of a number that is a prime number.
Common misconception
Pupils try to compose numbers additively using prime factors.
Ensure pupils are confident with finding the factors of a number first before extending to finding prime factors of known factors. Give time to building numbers with prime factors in arrays to help emphasise their multiplicative composition.
To help you plan your year 5 maths lesson on: Explain how to identify a prime factor of a number, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Explain how to identify a prime factor of a number, 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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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 2 maths lessons from the Understand and use the concept of factorisation (square and prime numbers) unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
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6
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100
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Exit quiz
6 Questions


