Mental Calculation, Mathematics, and Puzzles


About the Mental Calculation, Mathematics, and Puzzles category (1)
A Technique for Running Arbitrary Computations in One's Mind (5)
Resources for mastering mental math (2)
How to calculate day from date of birth (3)
Tips for learning soroban (11)
A nearly useless multiplication shortcut (2)
Soroban and Anzan ( 2 3 ) (44)
How to memorize the 100 year codes for calendar calculation? (13)
Modern Approach to Speed Math Secret & Trachtenberg (12)
Real World Division (1)
How can I start mental calculating ( 2 ) (37)
How to calculate antilogarithm mentally (4)
Mathemagician course (7)
Bees can perform simple arithmetic (1)
World Championships of Magic - sleight of hand (3)
South African maths whizz answers complex arithmetic questions in seconds (2)
Calculating logarithms by hand (18)
Needing a comprehensive book about the influence of mathematical discoveries (2)
Complex numbers (6)
Trigonometry functions (5)
Sleight of hand card palming (3)
The best Methods Mental Math (18)
Cross multiplication: How to multiply 3+ digit numbers? (15)
Stephen Hawking and Math (13)
Pi Art - Martin Krzywinski (2)
Hexadecimal (or Binary) Digits of Phi (3)
"Polynesian people used binary numbers 600 years ago" (1)
8th Mental Calculation World Cup 2018 (6)
MSO 2018 - Mental calculations questions paper (Pdf) and Final results (2)
Benjamin's 2x2 Method of Multiplication works for also for 3x3? (4)