Weird, that's how I do math in my head anyways but that's not how I was taught. It's the best way for me to do math in my head for sure. It's especially useful for multiplication of weird or large numbers without a calculator or pen and paper. Would be kind of awkward to teach I guess. I.e reading that poo poo was a lot harder to understand than what is actually going on
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# ¿ May 25, 2014 23:14 |
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# ¿ Apr 27, 2024 20:23 |