Norway has been mostly cashless for the better part of 2 decades. I've noticed one particular thing that gets much more difficult. I have trouble teaching my

Norway has been mostly cashless for the better part of 2 decades. I've noticed one particular thing that gets much more difficult. I have trouble teaching my kid about money, and quick addition/substraction. When money is much more abstract, it's difficult to explain how bank accounts aren't limitless, that it's not enough to put a piece of plastic close to a card reader. The other part is that I get shocked at how slow kids seem to be at knowing how to do various "money changing calculations".