when rounding off decimals to the nearest whole number you look for the number to the right of the decimal point if it is below 5 take the number that you have before the decimal eg. 13.21543 rounded to the nearest whole number would be 13 if it was 13.91234 the whole number would be 14 because 9 is higher than 5 use 5 as a gauge of what is high and what is low