Mental Math

One of the best places to learn about the art and science of mental math is the MentalCalculation mailing list.

There's a wonderful collection of over 400 tips and tricks at BEATCALC: Beat the Calculator.

• Memory and Mental Calculation World Records
• Mental Calculation World Cup
• "What's All This Mental Math Stuff, Anyhow?" article by Bob Pease 2006-03-30
• Wikipedia:Mental_calculation
• A scientific study on a calculating prodigy
• A study on brain areas used by a calculating prodigy