Is Anyone Using Kaktovik Iñupiaq Numerals to Speed up Their Math?


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March 6, 2020

Maths ...You would consider Insanity


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520

March 4, 2020

Looking for a Mental Math Training App


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6395

July 17, 2019

Katherine Johnson Dies at 101; Mathematician Broke Barriers at NASA


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423

February 24, 2020

Stuck in rubiks cube. Only last two corner pieces are interchanged.


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563

February 24, 2020

Willem Boumans new world record


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532

February 11, 2020

How to calculate the day of any given date


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633

February 4, 2020

Memoriad Additions: how to solve it quickly? Part 2


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February 3, 2020

38 + 85 by Finger Maths?


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February 2, 2020

The importance of mental calculation


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February 1, 2020

Memoriad Additions: how to solve it quickly?


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February 1, 2020

Memoriad mental addition of ten 10digit numbers


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390

January 19, 2020

Cross multiplication: How to multiply 3+ digit numbers?


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January 17, 2020

9th Mental Calculation World Cup 2020


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482

January 17, 2020

Help me to memorize (stock) numbers composed by more than 5 digits


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458

January 8, 2020

9307 × 7992 by Soroban?


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418

January 8, 2020

Alphabetical puzzle


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382

December 30, 2019

A very easy mentally way to calculate logarithm


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567

December 2, 2019

How to solve this Soroban addition?


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541

December 17, 2019

What are your books about mental calculation?


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December 14, 2019

Rinne Tsujikubo. 13 years old Japanese girl


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December 14, 2019

De kunst van het hoofdrekenen (Art of Mental Calculation)


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December 5, 2019

An alternative way to mentally calculate LOGARITHMS and ANTILOGARITHMS


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December 3, 2019

Mentally calculating trigonometric values


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435

December 2, 2019

Calculating squares and higher powers using division and addition


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483

November 30, 2019

Visualizing a chess board


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November 27, 2019

A completely different approach to calculating ln(2)


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November 22, 2019

Calculating ln Natural Logarithms


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459

November 16, 2019

Check out "Math  Quiz Game"


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585

November 14, 2019

Multiply two squaring numbers


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November 11, 2019
