Greetings. I've come with yet another issue which is causing me some distress. So I took everyone's advice and started self-teaching calculus (or at least I started trying... Limits are still confusing). However, my problem doesn't stem there. I decided to review my algebra before year 10 starts in September. What I found is truly an unpleasant discovery. I suck at it. A lot. I have a great book of mathematical problems. It's made for year 6-9, and yet I can't solve the problems on the first page! I'll be honest, I'm terrible at mental arithmetic. I get lost, I'm slow. Just better off using a calculator for even basic operations. So here is one problem that I can't solve no matter what I do. I thought I got the negative signs wrong; didn't work. I tried some stuff with the brackets; no luck. It's supposed to equal "6.3" I think, but I keep coming up with answers like 22, 27, 11, or even -5. I've gotten everything but the correct answer. 3.5^2 + 2 * [2.7 - (-0.5 + 0.3 * 0.6)] I can solve problems similar to this one, but still very inconsistently. I am not forgetting to switch signs inside the bracket, I'm not forgetting to square the 3.5 first, got the order of operations down perfectly. Yet these problems still confuse me. Would anyone know what I might be doing wrong? I do have ADD (I am revolted even just typing that), so lack of focus, perhaps? I can do linear equations mentally, I can use trig functions, solve quadratics, graph functions, do rational expressions; everything on my level. But I can't do 8*7. So I suppose I won't be doing applied mathematics? From my abilities (and lack of abilities), do you think pure mathematics could hold a place for me? I enjoy working with abstract numbers... What about physics? I'm total trash at chess, even though I try really hard to win. Suppose it means I have a short-sighted mind and I can't think properly? IQ of 125, but I don't think that means anything. I feel tired constantly, just totally burned out. So maybe I could attribute my atrocious mathematical abilities to that, but I feel as though that would be a shameless excuse. TL;DR (and I won't blame you for it): I'm bad at arithmetic and tend to forget a lot of algebra, I'm terrible at chess and I feel like I'm losing my mind lately. Which course, if and when the time comes, would you recommend? Or is there even any point in trying?