It depends on your workings. They will go to your workings and see if you got at least some of the figures right. For example, in a club a/c, the subscription working includes the addition/subtraction of several numbers.
Supposing five marks were going for the subscriptions answer in the income and expenditure a/c, and you got one figure wrong in your working, they take one mark off the five. I think thats how it works 😮