Sorry, Wally.
Gotta disagree here (partially).
I am seeing WAY too much of students that can't even do simple addition without a calculator. The overreliance on this automation is the problem. Don't laugh, but I have actually seen finger counting to add two single digit numbers.
WHAT THE F
CK??!!??
Not saying everyone finds multiplying two double digit numbers easy, but practise and using unfcukupable tools are a starting point.
Did I mention practise?
Does anyone notice how when they first learned to drive a car, they had to really work on clutch & gear coordination, parking, hill starts etc...? Notice how it gets easier with time?
Because you practise! Being able to get these answers without having to take your socks off has gotta make things easier when your workload has gone ballistic.
Not trying to drift the thread here, but seeing similar things with many AFR navexs where GPS has taken over.