Honestly, just my personal experience here, but amongst millennials, no one cares if you bust out the calculator app to add all your scores in a board game. It's actually superior to mental math because you can see the list of all the points you've added, if you add 20 numbers together it's nice to see them all after for verification purposes. There's no societal expectation placed on us whatsoever, it's all about getting the right answer.

Sorry, I meant children (rather than anyone younger than you are, which seems to be how some people use the word kids).

While I agree with being able to check the results with many modern calculators, my argument is that it is useful to know when the results have to be checked. For example: if you know that all of the points are less than 5 and you are adding 20 of them together, a result greater than 100 means you have to go back and check what was entered.

You don't group up the victory point chips in piles that each add up to 10 like I do? Heretic!

(I agree with you, btw).