1. The problem statement, all variables and given/known data I have a problem while writing the uncertainty of datas in my lab report (portfolio). So, here is my question: While multiplying some data with different uncertainties, I do multiply their uncertainties too, right? Then, if the multiplication of uncertainities has less digits after comma than that of the actual multiplication af data; should I round up some digits of the actual multiplication of data? 2. Relevant equations To make it more clear, here is an example: Work= Force x distance W(J)= m(kg) ±0.1 kg x g(m/sec2) ±0.1 m/sec2 x h(m) ±0.01 m W= 47.9 kg x 9.79 m/sec2 x 3.975 m W= 1864.040475 kg x m2/sec2= 1864.040475 Joule ±0.0001 Joule 3. The attempt at a solution Should it be like: W= 1864.0405 Joule ±0.0001 Joule ?