Sigma notation provides a concise notation for representing large sums. The summation formulas allow you to efficiently evaluate these sums. In this video, I discuss the summation properties and formulas that can be applied to sums written in sigma notation. Then, three example problems are presented which apply these formulas to evaluate sums. 00:00 - Introduction 01:10 - Contents 01:45 - Summation Properties and Formulas 08:55 - Example 1 12:55 - Example 2 17:45 - Example 3 Other videos covering sigma notation: *** What is Sigma Notation? (The Basics) *** How to Write a Sum in Sigma Notation If you have any questions, feel free to ask in the comments section.