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About the Mental Calculation, Mathematics, and Puzzles category
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0
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4260
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October 27, 2018
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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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0
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57
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January 17, 2022
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Is learning Soroban worth the time?
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5
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1057
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January 17, 2022
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Help with an advanced Nonogram/ picross
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0
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172
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January 6, 2022
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How to calculate square root of complex no in mind
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5
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1016
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January 1, 2022
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Glass Klein Bottles
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0
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189
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December 20, 2021
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Struggling with mental calculations due to working memory
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5
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388
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December 12, 2021
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Explanation of the Trachtenberg System
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4
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1204
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December 10, 2021
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Mental calculation
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12
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802
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December 8, 2021
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Fastest way to learn mental math
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8
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4267
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December 5, 2021
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"How To Become A Grandmaster In Chess"
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34
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2657
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December 2, 2021
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Rüdiger Gamm skills
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1
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293
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November 30, 2021
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Memoriad sqrt
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15
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674
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November 27, 2021
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981^5 calculated + video
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1
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328
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November 25, 2021
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Avoiding the carry
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10
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1283
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November 25, 2021
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Vedic maths
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3
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481
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November 25, 2021
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Shakuntala Devi, the faster and best human calculator ever?
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12
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952
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November 23, 2021
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1 Memoriad Addition Task under 45 seconds
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48
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1257
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November 23, 2021
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Correct multiplication indeed, but very slow. How to improve?
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12
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841
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November 22, 2021
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Are there some tricks who could help me to visualize a soroban?
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2
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492
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November 16, 2021
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Magic Tricks with Phones and Credit Cards
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0
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306
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November 6, 2021
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889014113748268 mod 222?
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36
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2330
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October 18, 2021
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Encrypt the 2 digits multiplication table in my mind
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20
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1249
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October 13, 2021
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Abacus vs PAO?
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2
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393
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October 13, 2021
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BEGINEER , Please provide your piece of advice
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0
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310
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October 11, 2021
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How much of mental math is subconscious?
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1
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484
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October 9, 2021
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Improving criss-cross
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4
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402
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October 7, 2021
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How to Calculate the Day of the Week from Any Date
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6
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523
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September 26, 2021
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Can someone help me with this? [puzzle #2]
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11
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385
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September 24, 2021
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Can someone help me with this? [puzzle #3]
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3
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461
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September 23, 2021
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