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YouTube

Mental Math Trick - Multiply Numbers Close to 100 in Your Head

MindYourDecisions via YouTube

Overview

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Master a powerful mental math technique that allows you to multiply numbers close to 100 in your head within seconds. This 12-minute tutorial demonstrates a secret mathematical trick that most people don't know, starting with an introduction to the concept before diving into specific examples with numbers in the 90s. Learn the mathematical proof behind why this method works, then apply the technique to calculate 96×88 mentally. The video concludes with a bonus section that extends your understanding of this rapid calculation method, making complex multiplication accessible through simple mental shortcuts.

Syllabus

0:00 intro
1:40 trick 90s
6:57 proof
9:00 96x88
9:57 bonus

Taught by

MindYourDecisions

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