Random Q for Twitter hive mind: If you hear 16 times 24, what is the mental math you do to multiply it?
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I’d never have thought to do it this way! Was that really the first method to pop into your head?
Yes; a childhood with a lot of math competitions and some time in grad school studying Diophantus will shape one’s instincts in this direction. If anything I use this tool too readily (I’d probably do 23 x 16 as 400 - 9 - 23).
