Google Calculator is an online tool offered by Google that lets you use its website to do basic math calculations such as addition and subtraction. This is convenient if you are on a business trip or ...

The calculator on your Apple devices can do more than add, subtract, multiply and divide. Here's how it can help you with all kinds of math problems.

WHAT YOU NEED: A whiteboard, ruler, pen and calculator. Image caption, STEP 1 - DRAW TWO BARS: Write out the problem and circle the key pieces of information. Here it is the fraction, 13/20, and what ...