Are there any mathematicians out there? Not math teachers. Mathematicians. Is it vital as a mathematician that you had memorized your times tables?
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If you ask me what 9x6 is… I have to think about it, and then do 60-6.
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Yeah, did that for all the 9s. So 9x7 = 70 - 7. Eights are three doublings. Six is 2x3, and I probably knew the 6's up to 6x7 because that's a 7. 5 is half 10, 4 is two doublings, doubling is just add to self. I guess know the 3s up to 9 on a good day, so that's it.
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Replying to @robamacl @Meaningness and
Seems either this is not as weird as I thought, or UST affiliation is somehow correlated.
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I wrote a paper about this for a grad-level developmental psychology course I took in 1982 or so. There’s probably better research available since then :)
8:26 PM - 17 Feb 2018
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