I think I vaguley remember when I started Level 1 a suggested number of digits to round to when working through problems, and more or less I’m generally pretty close to a given answer.
However with valuing derivatives, even though I’m take the right steps my numbers can be pretty off. Again, most of the time I can still pick the ‘closest’ value, but other times it’s just too close and I either have to re-do it, or literally calculate the difference between the two answers to find the one in which it’s closer.
I tend to use my STO and RCL functions on the calculator for ease and that’s probably what’s causing it. So, bottom line, is there a recommended number of decimal places I should carry my numbers to?