Multiplication, The Weird Way
If you don't have a calculator and
- You're sick of doing it the old way and are looking to unecessarily complicate your multiplication, or
- Your brain works a little "differently" from the rest of us, or
- You are a Russian peasent and you only have bowls of pebbles around to help you
For your new mental exercise, read this:
Math Forum: Ask Dr. Math FAQ: Russian Peasant Multiplication