You can square any two- or three-digit number that ends in five faster than your phone's facial ID will recognize you. This simple trick will boost at least one of your math skills to supersonic speeds. So let that calculator app gather some dust and channel your inner Euclid today. Presented by Arthur Benjamin Learn more about math tricks at www.wondrium.com/youtube ------------------------------------------- The Great Courses is the global leader in lifelong learning and our video-on-demand service The Great Courses Plus gives you unlimited, uninterrupted access to a world of learning anytime and anywhere you want it. With courses on thousands of topics, you are sure to find something that will ignite your curiosity and invigorate your passion for learning. Enjoy a curated sampling of our full catalog of content by subscribing to our YouTube channel. We add new history, science, and math videos every week. ------------------------------------------- Read articles from the smartest experts in their fields: www.Thegreatcoursesdaily.com Find us on all our social channels: -Facebook: www.facebook.com/TheGreatCourses -Twitter: twitter.com/thegreatcourses -Instagram: www.instagram.com/thegreatcourses ------------------------------------------- #MathTricks #Mathemagician #QuickMultiplication

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