These videos deal with surface area of a cylinder formula questions aimed at around grade 5. They can be a little challenging and you might need to use the formula in a number of ways - particularly the second question of video 2. - A solid cylinder has a height of 12cm and a radius of 5cm. Work out the total surface area. Give your answer correct to 3 significant … [Read more...]

 These videos deal with Ratio GCSE maths higher tier questions aimed at around grade 5, although they can be a little challenging. There's quite a lot of words, and it's good to try to ‘sketch’ out the question to help with understanding. 1. In a clothing shop the ratio of hats to ties is 4:3. The ratio of gloves to hats is 9:1. Find the ratio of ties to gloves. Give … [Read more...]

 This video deals with Pythagoras line segment problems, and is aimed at around grade 5 GCSE maths. You'll need to find a way to create a right angled triangle on the grid and, as always, please do stop the video, try the questions, and compare your solution. This video deals with slightly different Pythagoras type questions, in the form of calculating a pythagoras line … [Read more...]

 These videos deal with density mass volume problems, and are aimed at around grade 5 GCSE maths. You'll need to apply the formula: density = mass/ volume with most of the questions and, as before, please do stop the video, try the questions, and compare your solution. 1. The diagram shows a solid cuboid made of wood. The wood has a density of 0.56 grams per cm … [Read more...]

Reverse percentage are very popular GCSE maths problems, aimed at around grade 5. They are usually either percentage decrease - working out the normal price, if you know the sale price of an item - or percentage increase, such as property prices. Here's the questions, which are fairly representative of the types of reverse percentage questions usually asked: 1. In a sale, … [Read more...]