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Paper 1 & 3
Algebra Basics
Foundation
Treat equations like a balance: keep both sides equal.
Key Facts
- Last-minute priority: solve, expand, factorise quickly.
- Substitute values carefully.
Topics Covered
Solving Linear Equations
What you need to know
- •Undo operations in reverse order.
- •Balance both sides.
Exam Tips
- Always show the step where you divide.
Expand & Factorise
What you need to know
- •Multiply through brackets.
- •Factorise by taking out the common factor.
Exam Tips
- Check factorising by expanding.
Key Terms
Factorise
Write an expression as a product of factors.
Substitute
Replace a letter with a number to evaluate.
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Common Exam Questions
Solve 6x + 5 = 41.
2 markseasyPaper 1
Model Answer
x = 6
What examiners want to see
- ✓Subtract then divide.
Factorise 12x + 18.
2 markseasyPaper 1
Model Answer
6(2x + 3)
What examiners want to see
- ✓Take out the highest common factor.
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