1. The problem statement, all variables and given/known data 1) how do I know if the significant digit is supposed to be of " infinite sig-digs" ? If it is a constant value that is universally known, ike density then i understand that. But lets say i were to do ... 35+273.15 2. Relevant equations addition? 3. The attempt at a solution when adding, you go to the least amount of decimal places. so does that mean I just use a whole number?