Видео ютуба по тегу Math Shortcuts

How to Calculate Faster than a Calculator - Mental Math #1
How to Calculate Faster than a Calculator - Mental Math #1
Trick To Always Remember Your Times Table (6 to 10)
Trick To Always Remember Your Times Table (6 to 10)
10 Math Tricks School Didn't Teach You But Should Have
10 Math Tricks School Didn't Teach You But Should Have
Square any 2 digit number in 3 seconds I Crazy Math Trick
Square any 2 digit number in 3 seconds I Crazy Math Trick