8 GCSE/IGCSE worksheets on percentages, indices and factorisation (with solutions)

8 worksheets on the following: finding a percentage of an amount, calculating a fraction of an amount, expressing a fraction as a percentage, increasing and decreasing an amount by a percentage, solving problems involving reverse percentage and percentage change, quadratic factorisation, expanding brackets and factorising, power 1, power 0, negative powers and fractional powers and simplifying expressions with indices using the multiplication and division laws of indices. Detailed solutions are provided.