Formulae Given in Your Exam
Good news - you won't need to memorise everything! Your exam paper will provide several key formulae when you need them.
Probability calculations become much easier with the given formula: P(A or B) = P(A) + P(B) - P(A and B). This helps you work out the chance of either event A or event B happening. Remember, you subtract the overlap to avoid counting it twice.
For geometry and measurement, you'll get the trapezium area formula and all the circle formulae (circumference and area). More complex 3D shapes like spheres and cones will have their surface area and volume formulae provided too. The kinematics formulae for motion problems will also be there when you need them.
Pythagoras' theorem and trigonometry ratios (sin, cos, tan) will be given, along with the compound interest formula. This means you can focus on understanding how to use these formulae rather than frantically trying to remember them.
Pro tip: Even though these formulae are provided, practise using them beforehand so you can apply them quickly during the exam!
