Factorising with common factors

Reverse expanding by taking out the highest common factor — numbers, letters and negatives — and check by expanding.

⏱ 18 min❓ 9 questions

What you'll be able to do

✔I can find the highest common factor of algebraic terms
✔I can factorise an expression fully, including taking out a negative factor
✔I can check a factorisation by expanding it

How this works

1Read the short explanations first — they teach you what you need before each question.
2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

9 questions and 1 quick teaching card, including:

🔘Multiple choice — Tap the answer you think is best, then check it.
✏️Fill in the blank — Type the missing word to complete the sentence.

👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.

Curriculum: AC9M8A01