78,879 rounded to the nearest hundred is equal to 80,000 I hope that this helps you here is how i did it: Rounded numbers can be easier to use and remember than exact numbers. When you round a number to the nearest 10,000, you are determining what multiple of 10,000 the number is closest to. For instance, the number 24,000 is closer to 20,000 than 30,000, so it rounds down to 20,000.