Hello all,
I am currently studying Civil Engineering - this is a course which involves huge amounts of problem solving, which, sadly does require great accuracy.
However, I have noticed, that no matter how hard I try to check my answers, I always get some silly mistakes. It is not, that I have do not know the subject or apply the wrong methods, but those are just constant mistakes of inaccuracy - for example, forgetting to write a negative sign or swapping some numbers.

What could you recommend, so I could improve my accuracy?

Thanks in advance