Forbidden MULTIPLICATION Tricks Schools Never Taught You
The weird math behind mental multiplication isn’t just fast—it’s almost unfair. These ancient calculation tricks reveal how pattern recognition and logic can outperform even a calculator. Once you see how they work, you’ll never look at numbers the same way again.
0:00 Intro
0:16 Trick #1: Magical Number 11
2:12 Trick #2: Squaring Numbers Ending in 5
3:12 Trick #3: Same First Digit, Last Digits Sum to 10
4:15 Trick #4: Near-Perfect Squares
5:16 Trick #5: Complement Method
6:27 Trick #6: Doubling and Halving
7:27 Why These Tricks Work