To round to 2 places, you would add the numbers 2 + 1. For example, if you wanted to round to the nearest 5 points, you would add 5 + 1. How do you round to four decimal places? To round to four decimal places, use the following formula: .99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999991000000.000000000000 How many decimal places should ... Read more...