Your Egyptology knowledge is awesome Anchor.
How sensible of Scotland (generally educationally higher than here), to have separate Arithmetic and other Maths as O level.
I was not good at Maths, it was one subject where I found it diffiult to retain knowledge and I was always in the bottom set for that. I'd learn how to do something, think I had it cracked, a few days later it was gone! Not bad at arith if I took it slow and careful!
(The only extra tuition I had was from my dad who was realistic and helped me with maths a couple of times a week, featuring on stuff that would come up at O level and keeping it fresh in my brain. Up to a point he made it interesting. So I was able to pass thank goodness, that was important.If I hadn't the school would have expecte me to retake& I didn't want to do that. Never bothered with it since.)