About the Mental Calculation, Mathematics, and Puzzles category


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4260

October 27, 2018

Was thinking of getting my 7 year old a soroban. Is there an article that compares soroban and other mental math techniques?


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57

January 17, 2022

Is learning Soroban worth the time?


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1057

January 17, 2022

Help with an advanced Nonogram/ picross


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172

January 6, 2022

How to calculate square root of complex no in mind


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1016

January 1, 2022

Glass Klein Bottles


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189

December 20, 2021

Struggling with mental calculations due to working memory


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388

December 12, 2021

Explanation of the Trachtenberg System


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1204

December 10, 2021

Mental calculation


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802

December 8, 2021

Fastest way to learn mental math


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4267

December 5, 2021

"How To Become A Grandmaster In Chess"


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2657

December 2, 2021

Rüdiger Gamm skills


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293

November 30, 2021

Memoriad sqrt


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674

November 27, 2021

981^5 calculated + video


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328

November 25, 2021

Avoiding the carry


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1283

November 25, 2021

Vedic maths


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481

November 25, 2021

Shakuntala Devi, the faster and best human calculator ever?


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952

November 23, 2021

1 Memoriad Addition Task under 45 seconds


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1257

November 23, 2021

Correct multiplication indeed, but very slow. How to improve?


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841

November 22, 2021

Are there some tricks who could help me to visualize a soroban?


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492

November 16, 2021

Magic Tricks with Phones and Credit Cards


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306

November 6, 2021

889014113748268 mod 222?


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2330

October 18, 2021

Encrypt the 2 digits multiplication table in my mind


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1249

October 13, 2021

Abacus vs PAO?


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393

October 13, 2021

BEGINEER , Please provide your piece of advice


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310

October 11, 2021

How much of mental math is subconscious?


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484

October 9, 2021

Improving crisscross


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402

October 7, 2021

How to Calculate the Day of the Week from Any Date


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523

September 26, 2021

Can someone help me with this? [puzzle #2]


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385

September 24, 2021

Can someone help me with this? [puzzle #3]


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461

September 23, 2021
