What do you need to remember for the exam, and what is given in the formulae booklet? For C1, the only information given in the Formulae Booklet is: Mensuration Surface area of a sphere = 4лr2 Area of curved surface of cone = лr x slant height Arithmetic series un = a + (n […]
Four Digit Number The first digit is one third of the second digit The third digit is the sum of the first two digits The fourth digit is three times the second digit What is the number? Trains Two trains run between stations at A and B The first train runs from A to B […]
Get to know the names of all the main 2-d shapes, how to recognise them and what their properties are. There’s a downloadable worksheet at the end of this post for you to try, and see how well you know 2-d shapes. Triangles Equilateral triangle o All sides equal in length and all angles the […]
Rearranging a formula means making one letter the subject Example Rearrange a + d = c + b to make c the subject: c = a + d – b Six steps that apply to rearranging formulae: o Remove any square root signs by squaring both sides o Deal with fractions by cross-multiplying to get […]
Data – Histograms A histogram is a specific type of bar chart For a normal bar chart, each bar is the same width and it is the height of the bar that is important For a histogram, the bars can be different widths and it is the area of each bar that is important, not […]
The C1 Algebra topics all form part of the GCSE syllabus but are covered in more depth in C1. Key facts to remember Ways of simplifying algebraic expressions: o Collect up like terms o Use the rules of indices to combine terms o Expand expressions by multiplying out brackets, then collect up like terms […]