7 GCSE/IGCSE worksheets on the following: parallel and perpendicular lines, gradient and y-intercept of a line. Detailed solutions are included.

Three worksheets on checking if two given lines are parallel or perpendicular. Detailed solutions are provided.

Six worksheets on basic algebra: using algebraic notation, collecting like terms and expanding brackets. Solutions are included.

4 worksheets on the following: increasing/decreasing an amount by a percentage using the multiplier method and the two step method, percentage change and reverse percentage.

Three worksheets on: comparing fractions, equivalent fractions and finding the fraction of an amount. Solutions are included.

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.

Three worksheets on the following: converting decimals to percentages, percentages to fractions and fractions to percentages, finding the percentage of a quantity without the use of a calculator and 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. Detailed solutions are included.