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.

There are some basic properties of whole numbers any 3rd grader can tell you: Each number is represented by a single symbol, and followed by a single successor. Multiplication makes a number bigger; ...

The iPhone, up through iOS 6, comes with a standard calculator application. When you hold your phone in portrait mode, with the home button at the bottom, then the display for the calculator shows ...

An animated journey into the world of rational numbers! A fraction thief disrupts a number town, leading to a fun exploration of fractions, natural numbers, and mathematical concepts. Supreme Court Is ...