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The book that made things click for me was Maths: A Student's Survival Guide by Jenny Olive. Give it a shot, use a calculator for everything. IMO in the age of computers let computers do the calculations and just learn to have intuitions.

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I'd have to be convinced that you can develop those intuitions without basic arithmetic. Mind you, I'm not saying spend a lot of time mastering long division or whatever. (I'd probably have to look up the technique myself.) But I think some level of numeric fluency is probably necessary.

“I'd probably have to look up the technique myself.”

No offense but I am pretty sure that was the point. If it’s math you forget, it’s not math worth learning. Learn what you want or need to know. The rest is dross.

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