Free maths tools for IGCSE Maths

Calculators that show the working, not just the answer. Each one has a worked example, the mistakes that cost marks, the keystrokes for your own calculator and links to the notes and practice questions.

Data and statistics

• Mean, median and mode calculatorMean, median, mode, range, quartiles and the interquartile range, from a list or a frequency table, with a box plot.

Matrices, vectors and complex numbers

• Vector calculatorMagnitude, unit vector, sum and difference, scalar product, the angle between two vectors and the vector product, in 2D or 3D.

In class

Every tool works on the board: change one number and the answer, the working and the graph update. “Copy link to these numbers” gives you a link that opens the tool with the same numbers, to share with your class. Answers are rounded to 3 significant figures; switch to 4 or 6, or full accuracy, under each tool.

In the exam

These tools are for learning and checking. In the exam you need your own calculator and your written working, so practise both: calculator guides show the keystrokes step by step.