1. GCSE FORMULAE You need to know this for your exam (Higher tier only formulae are indicated) www.mathssandpit.co.uk/blog

2. AREA Rectangle = l × w l w www.mathssandpit.co.uk/blog

3. AREA Parallelogram = b × h b h a www.mathssandpit.co.uk/blog

4. AREA b h www.mathssandpit.co.uk/blog

5. AREA b h a www.mathssandpit.co.uk/blog

6. Circles Circumference = π × diameter C = πd Diameter www.mathssandpit.co.uk/blog

7. Circles Circumference = 2 × π × radius C = 2πr Centre Radius www.mathssandpit.co.uk/blog

8. Circles Area = π × radius × radius A = πr 2 Centre Radius www.mathssandpit.co.uk/blog

9. VOLUME h w www.mathssandpit.co.uk/blog

10. VOLUME Area of cross section www.mathssandpit.co.uk/blog

11. VOLUME r Cylinder = area of circle × height Cylinder = πr 2 h www.mathssandpit.co.uk/blog

12. VOLUME Higher tier only www.mathssandpit.co.uk/blog

13. COMPOUND MEASURES Speed = Distance ÷ Time The clue is in the units eg speed in m/s, indicates metres ÷ seconds www.mathssandpit.co.uk/blog

14. COMPOUND MEASURES Density = Mass ÷ Volume The clue is in the units eg density in g/cm 3, indicates weight in grams ÷ volume in cm 3 www.mathssandpit.co.uk/blog

15. COMPOUND MEASURES Pressure = Force ÷ Area The clue is in the units eg speed in N/m 2, indicates force in Newtons ÷ area in m 2 www.mathssandpit.co.uk/blog

16. RIGHT-ANGLED TRIANGLES Pythagoras a 2 + b 2 = h 2 (h is always the hypotenuse) h a b www.mathssandpit.co.uk/blog

17. RIGHT-ANGLED TRIANGLES Trigonometry hyp adj opp x⁰x⁰ Check your calculator is in degrees www.mathssandpit.co.uk/blog

18. NON-RIGHT-ANGLED TRIANGLES Sine Rule B C A Check your calculator is in degrees ab c Higher tier only www.mathssandpit.co.uk/blog

19. NON-RIGHT-ANGLED TRIANGLES Cosine Rule B C A Check your calculator is in degrees ab c Higher tier only www.mathssandpit.co.uk/blog

20. NON-RIGHT-ANGLED TRIANGLES Area of a triangle B C A Check your calculator is in degrees ab c Higher tier only www.mathssandpit.co.uk/blog

21. Algebra Quadratic Equations Higher tier only www.mathssandpit.co.uk/blog