this post was submitted on 23 Aug 2023
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[โ€“] NegativeInf 36 points 10 months ago (1 children)

I find this method is far faster for quick calculation of large numbers off hand. Or at least estimation. Choose a close round number you do know the maths for, then just add or subtract the relevant parts to get it to true.

[โ€“] [email protected] 9 points 10 months ago