Math Notes is a feature that allows you to crunch numbers in certain apps on your iPhone, iPad, and Mac. You can use it for study, for work, or for personal use anywhere you need to do anything from ...

Revise what logarithms are and how to use the 'log' buttons on a scientific calculator as part of Higher Maths.

There are two basic ways to do fractions on your iPhone calculator. Here's what you need to know to use the built-in app.