These questions are fairly challenging and aimed at around grade 8 GCSE maths. They deal with solving quadratic simultaneous equations by substitution, and you'll need good 'algebra confidence.' Please do stop the video, try the questions and compare your solution. Video one - solve: x - 2x = 3 x² + y² = 18 Video two - solve: x - 2y = 1 x² + y² = … [Read more...]

These videos are examples of the 'finding the missing angle' types of questions. They can be a little challenging, although I hope that the examples will give you an overview of the range of GCSE maths problems. Unfortunately there isn't really a specific topic; these problems are more about solving. You might need circle theorems, and also properties of regular polygons - … [Read more...]

 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 an example of answering a question using the sine rule: "Joe has a field in the form of a triangle ABC, with dimensions as shown. (a) Calculate length AB (b) Calculate the area of the field" The question is aimed at around grade 7 and the topic appears in all the main examination boards, including Edexcel, AQA and OCR. The sine rule is fairly popular and, … [Read more...]

  This video gives an explanation of how to work with difficult GCSE maths iteration questions, sometimes called 'iterative formula.' The questions can be extremely wordy ... but should be absolutely fine once you get the general idea. There's also some additional examples at the end of the page. The question is aimed at GCSE maths grade 7+ calculator paper. (a) … [Read more...]