Mental Calculation, Mathematics, and Puzzles


Topic Replies Activity
About the Mental Calculation, Mathematics, and Puzzles category 1 October 27, 2018
De kunst van het hoofdrekenen (Art of Mental Calculation) 5 December 5, 2019
An alternative way to mentally calculate LOGARITHMS and ANTILOGARITHMS 1 December 3, 2019
Mentally calculating trigonometric values 1 December 2, 2019
A very easy mentally logarithm way of calculation for all 1 December 2, 2019
Calculating squares and higher powers using division and addition 12 November 30, 2019
Visualizing a chess board 15 November 27, 2019
A completely different approach to calculating ln(2) 4 November 22, 2019
Calculating ln Natural Logarithms 3 November 16, 2019
Binary numbers techniques 18 November 15, 2019
Check out "Math - Quiz Game" 10 November 14, 2019
Multiply two squaring numbers 14 November 11, 2019
Squaring shortcut method 15 November 8, 2019
More repetition fun in division 6 November 8, 2019
Multiply into double no 4 November 8, 2019
Some special case in multiplication 6 November 6, 2019
How to calculate square root of complex no in mind 5 November 6, 2019
Fast division by 23 9 November 6, 2019
**Conjugate of complex no** 1 November 6, 2019
Think! There is always an easier way 29 November 6, 2019
Special number 1001 9 November 5, 2019
How to learn tables of maths 1 November 5, 2019
Best way to calculate + commit to memory a table with odds/ratios/%? 12 October 31, 2019
How to calculate factorial number 4 October 31, 2019
How to do calendar calculations 5 October 23, 2019
Duplex method for square roots 4 October 20, 2019
How to calculate day from date of birth 8 October 20, 2019
Multiplication table (99x99) 6 October 18, 2019
Multiplication a more efficient algorithm 1 October 17, 2019
Three digit division 4 October 17, 2019