ex 5 ch 7 – would the following presentation be suitable for full marks in exam conditions – wanting to totally minimise ‘non-value adding’ information and detail!?
Given that I cannot understand what you are doing then I’d have to say no. Using the abbreviations is fine but I cannot fathom what numbers should be marked. If it is the final number in each row then the numbers beforehand, including the workings, should be in brackets.