Видео ютуба по тегу Math tricks

How to Calculate Faster than a Calculator - Mental Math #1

Square any 2 digit number in 3 seconds I Crazy Math Trick

99% of people don't know this secret math trick

Mental Addition and Subtraction Tips — Math Tricks with Arthur Benjamin

10 Math Tricks School Didn't Teach You But Should Have

5 Fast Math Tricks for Multiplication - Mental Math

This Math Trick is Black Magic