Explain how to identify a prime number or a composite number
I can explain how to identify a prime number or a composite number.
Explain how to identify a prime number or a composite number
I can explain how to identify a prime number or a composite number.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- A prime number has only 2 factors, 1 and itself.
- A composite number is a number with more than 2 factors.
Keywords
Factor - A factor is a whole number which exactly divides another whole number.
Prime number - A prime number is a whole number greater than one which has exactly two factors.
Composite number - A composite number is a whole number which has more than two factors.
Square number - A square number is the result of multiplying an integer (not a fraction) by itself.
Common misconception
Every number has one and itself as a factor, so every number is a prime number.
Ensure pupils explore the different arrangements that numbers can make with tiles in arrays. Point out that the numbers which cannot be arranged in any way except for one row or column are prime numbers.
To help you plan your year 5 maths lesson on: Explain how to identify a prime number or a composite 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 number or a composite 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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Exit quiz
6 Questions
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16