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just slide a two from 27 to 48, and you get 25 + 50, right?
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This method looked pretty popular in the thread. It’s what I did too, and I think it’s from all the symbolic algebra I’ve done since grad school.
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And yet people get so mad about common core math without realizing that if they’re any good at mental math they’re already probably using most elements of it
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Actuality is or is not prior to potentiality?
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I don’t know the term ‘common core math’ but apparently I’m pretty good at it lol
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60+15 easy
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FWIW I do (2+4)=6, (7+8)=15 --> the previous 6 ->1 = 75. I guess it's just the "traditional" method in the opposite direction but my head likes to work it out better left to right.
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Too many strands in the old duder's head?
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