These videos are examples of compound interest type questions - now called 'growth and decay.' George invested £3200 in a savings account for 3 years. He was paid compound interest at a rate of 3.5% per annum. Work out how much was in the account after 3 years? Tony invested £4500 for 3 years. He was paid 4% per annum compound interest. Calculate the total … [Read more...]

This video is all about how to change the subject of a formula, and is aimed at around grade 5 GCSE maths. Make h the subject of the formula M = √((2h + 1)/3) These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. Please do stop the video, try the … [Read more...]

This video is all about finding the missing angle in a shape, and is aimed at around grade 5+ GCSE maths. "P, Q and R are points on a circle, centre O. Angle OPR = 36 degrees. Work out the size of PQR." Finding the missing angle in a shape questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic … [Read more...]

  This video is all about finding the missing angle in a regular polygon, and is aimed at around grade 5 GCSE maths. These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. Please do stop the video, try the question and compare your solution. PQ, … [Read more...]

Speed Distance Time These questions are very popular on GCSE maths papers, particularly foundation level, as they are 'functional' or 'real life.' Most of the problems deal with train or car journeys and might involve a stop half way through - usually something along the lines of a trip to see a friend, lunch and then a drive home. Typical questions involve working out the … [Read more...]