I think mental arithmetic is one of those things that simply requires vast amounts of practise. I’m quite slow at it, but when I’m forced to do a lot of it, say

I think mental arithmetic is one of those things that simply requires vast amounts of practise. I’m quite slow at it, but when I’m forced to do a lot of it, say for keeping score. I quickly get faster. I too was much better at applied maths and stats. It was fairly easy for me. But my brain just shuts down doing pure math.