Here's a few videos on how to calculate the surface area of a cone and hemisphere, that I hope might be useful. They are becoming a little more popular on GCSE mathematics as you need to demonstrate a clear, logical method. The questions can be fairly straightforward, although you need to remember a few different formulas: Surface area of a cone = pi x r x l Surface area … [Read more...]

## How to work with indices – GCSE maths practice questions

GCSE mathematics questions on how to work with indices appear on many exam papers and you can download the questions from here. They can be a little challenging and please do practice all of the problems - I'll arrange a link to the answers very soon :-) The main things to remember when you are asked how to work with indices are: - Learn the basic concepts - for instance … [Read more...]

## How to rearrange the subject of a formula

GCSE mathematics questions on how to rearrange the subject of a formula appear on many exam papers and you can download the questions from here. They can be a little challenging and please do practice all of the problems; I'll post the answers very soon. The main things to remember when trying to rearrange the subject of the formula are: - Work down the page and … [Read more...]

## How to work out a formula for a common difference arithmetic sequence

GCSE mathematics 'common difference' arithmetic sequence questions appear on many exam papers. This is where the same number is added, or subtracted, each time. For instance the sequence 12, 16, 20, 24, 28 .... has a common difference of add 4 ...... or 16, 8, 0, -8, -16 has a common difference of subtract 8. You're usually asked to create a formula for 'the nth term' and … [Read more...]

## How to takeaway subtract fractions – more difficult :-)

Takeaway subtract fractions questions appear on many exam papers throughout primary and high school. This particular question deals with: The main things to remember when working with takeaway or subtract fractions questions are: The bottom numbers 'the denominators' need to be the same (in this question they are both 12) Takeaway the numbers ... and then the … [Read more...]