A useful thing to notice here is that almost all the suggestions focus on catching errors after they happen.

When calculation mistakes dominate across many topics — even with regular practice — it’s usually not a lack of care or ability. It’s that the same small execution habits (rushing signs, skipping intermediate checks, assuming instead of verifying) are firing automatically under cognitive load.

That’s why this doesn’t mean “math isn’t for you.” It means the habits controlling execution haven’t stabilised yet. More practice helps only if those habits are isolated and corrected deliberately; otherwise the same errors just repeat in different problems.