Example 5 = .50 = .500 = .5000 When rounding to the nearest second, you have to check the numbers that come after the decimal (5.89) to see if you should round up or down. If the number in the tenths column is 5 or more (i.e 4.5, 3.8, 4.9, 1.7, 2.6), you have to round up. If the number in the tenths column is less than five (i.e 1.2, 9.3, 7.4 ect.), you have to round down. Example: 57.28 = 57.00 Get it?