Rounding 78.99 to the Nearest Whole Number

To round 78.99 to the nearest whole number, we look at the decimal part, which is .99. Since .99 is equal to or greater than .5, we round up the whole number. Therefore, 78.99 rounded to the nearest whole number is 79.

Remember, when rounding decimals, if the decimal part is 5 or greater, round up. If it's less than 5, round down. This is a fundamental concept in number theory and is frequently used in math classes, particularly in Grade 6 in the USA.