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OpenStudy (noobsteresta):
I need to multiply 5465 with 4536 without calculator and paper/pen. It's easy i just forgot the trick. Anybody?
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OpenStudy (anonymous):
am i allowed to use a calculator or is it not only for you?
OpenStudy (noobsteresta):
nope. i need the trick
OpenStudy (reemii):
sure it's not 4535 ?
OpenStudy (noobsteresta):
no
OpenStudy (reemii):
so a special method for mental multiplication? https://en.wikipedia.org/wiki/Trachtenberg_system#General_multiplication ?
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OpenStudy (noobsteresta):
This is exactly what i was looking for. Thanks!!
OpenStudy (reemii):
This looks interesting, but needs practice :) you're welcome
likeabossssssss (likeabossssssss):
welcome to os
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