the thing is: the calculator will always get it right.
our brains use all kinds of shortcuts and patterns so it’s not even that rare for mental calculations to end up completely wrong, or you get the right answer but write the wrong thing, which is less likely to happen if you see the digits in front of you and copy them.
I had a coworker go get a calculator to put in, I shit you not, 10+190
I have to do this before my coffee in the morning. My tired brain can’t be trusted to do math.
the thing is: the calculator will always get it right.
our brains use all kinds of shortcuts and patterns so it’s not even that rare for mental calculations to end up completely wrong, or you get the right answer but write the wrong thing, which is less likely to happen if you see the digits in front of you and copy them.