Last updated on Sep 21, 2026

Factorising (OCR GCSE Maths): Flashcards

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Factorising

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Practise the cards

12 cards from this deck

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Definition of factorising

Putting back into brackets

Factorising is the opposite of...

Expanding

First step when factorising

Identify the Highest Common Factor (HCF)

Common factors can be...

Numbers, letters, or both

Where to place the HCF when factorising

Outside the bracket

How to find what goes inside the bracket

Divide each term by the HCF

How to check factorisation is correct

Expand the bracket

Break down $12a$ into factors

$12 \times a$

Break down $6y^2$ into factors

$6 \times y \times y$

Common mistake when factorising

Not taking out the highest common factor

Factorise $7a + 21$

$7(a + 3)$

Factorise $10p + 15pq$

$5p(2 + 3q)$

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