Maths study guides
Short, honest explanations of the topics that trip people up, each with worked examples you can try in our calculators.
Study skillsHow to check your maths homework properlyFive quick, reliable ways to check a maths answer yourself: estimation, reverse working, a second method, plugging back in and a calculator as a final check.FractionsAdding and subtracting fractions made simpleA friendly walk-through of adding and subtracting fractions with different denominators, including mixed numbers, with worked examples and common mistakes.PercentagesPercentages in everyday life: discounts, tax and marksEasy mental shortcuts for percentages, how discounts and tax really work, and why +50% then -50% is not break-even.AlgebraSolving quadratic equations three waysThree reliable ways to solve quadratic equations: factorising, the quadratic formula and completing the square, with worked examples.StatisticsMean, median or mode: which average should you use?Understand the three averages, when each one is the right choice, and how outliers can make the mean misleading, with simple worked examples.