Okay so I have a huge problem, I'm over-reliant on a calculator for maths! I've completely lost my ability to do math mentally! And place that will help me with division and multiplication that have real grade 2 basic maths like carrying forward etc I vaguely remember some of that... PLEASE HELP! It's my 12th ! These exams won't come back again! Just this once in my life, I can't eff it up!