Re:GPT might be an information virus (2023)
by nunez on Monday July 28, 2025 @12:51AM
(#44707317)
People who make that retort forget that the calculator was immensely helpful but _also_ antiquated the need for mental math, which in my opinion is a bad thing. (Everyone should be able to calculate 5% and 10% of numbers, given how easy it is to do)
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Re:GPT might be an information virus (2023)
by johnisgood on Monday July 28, 2025 @04:52AM
(#44708756)
Well, I suppose many people do not know of these "mental math tricks".
To get 10% of a number, just move the decimal left: 10% of 40 -> 4.0.
To get 5% of this number, get 10% first, then halve it. It is the half of 10%, which in this case would be 2.0.
If you want to do this on a computer / calculator, you simply do: 40 * 0.10 for 10% or 0.05 for 5%. I was a very young kid when I learned to do this on a calculator, and I absolutely loved it!
Exactly, but when you learn math by calculator, you don't learn these tricks, which brings us to today, where tipping calculators rank pretty well on app stores.
Re:GPT might be an information virus (2023)
by colejohnson66 on Monday July 28, 2025 @09:57AM
(#44710929)
What makes tipping calculators even crazier is that your phone already has a calculator.