The best place for doing high-level math on an iPhone or iPad may be the Calculator app's Math Notes tool. In fact, with an iPad and a stylus, there's not much restriction on what you can do -- you ...

Messages can solve simple math equations like "2+2=" by typing them into the text field. The app can also solve equations that use more complex formulas, such as the trigonometric functions of sine, ...

Microsoft Excel provides numerous mathematical functions that save time and improve accuracy in data entry. Percentage markups are used in retail, government and business environments to calculate the ...