• Serinus@lemmy.world
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        7 months ago

        Your life is easier and better if you can do this kind of simple math in your head.

        • Norgur@fedia.io
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          7 months ago

          Oh don’t you try to sell me on the “you won’t always have a calculator in your pocket” thing. I have fucking Excel in my pocket.

          • notabot@lemm.ee
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            7 months ago

            It’s not just about haveing a calculator, it’s also that it’s faster and more convenient if you can do simple sums like this in your head. It also means you can sanity check the numbers your calculator gives you to make sure you didn’t make a mistake entering the sum.

            To your point below about products having their unit cost displayed, more than once I’ve seen that just be wrong, so I wouldn’t rely on it. Make sure you can check it in your head.

          • Serinus@lemmy.world
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            7 months ago

            Who really wants to use Excel to figure out if the 24-pack of Coca-Cola or the 3 12 packs is a better deal?

            • Norgur@fedia.io
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              7 months ago

              I don’t need to, there’s a legal requirement to print prices per liter or kg on every price tag here.

              • HopFlop@discuss.tchncs.de
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                7 months ago

                But if you want to buy only half a kg, you don’t know how much it costs (if you dont know basic maths)- because it only lists the price for a full kg. Do you start pulling out your Excel for that?

                • Norgur@fedia.io
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                  7 months ago

                  Every offer lists how much per kg that offer is. So I do not need any calculations to see which offer is cheaper at all. Why would the price per kilo become useless of I only buy half a Kilo?