Understanding Scientific Notation is very important in Science and Engineering! When you work with either very big numbers or very small numbers in Chemistry, Biology, Physics, or Engineering, you can use Scientific Notation to write your data in much more compact form. In this video, we show you how to convert very large numbers and very small numbers into Scientific Notation. We also show you how to do calculations with numbers written in Scientific Notation. There are specific rules to follow for addition, subtraction, multiplication, and division, and we show you fully worked examples for all of these cases. We also show you how to work with Scientific Notation with your scientific calculator.