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 5 months ago
Your life is easier and better if you can do this kind of simple math in your head.
Norgur@fedia.io 5 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 5 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 5 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 5 months ago
I don't need to, there's a legal requirement to print prices per liter or kg on every price tag here.