How do you round 99.999 to one decimal place?

To round 99.999 to one decimal place, you get 100.0.

When rounding a number to one decimal place, you look at the digit in the second decimal place to decide whether to round up or down. In this case, the number is 99.999. The digit in the second decimal place is 9. According to rounding rules, if this digit is 5 or greater, you round up the digit in the first decimal place.

Here, the first decimal place is 9, and since the second decimal place is also 9 (which is greater than 5), you round the first decimal place up. However, rounding 9 up by 1 results in 10, which means you need to carry over to the next whole number. Therefore, 99.999 rounded to one decimal place becomes 100.0.

This process ensures that the number is represented as accurately as possible with the specified number of decimal places. Remember, rounding is a way to simplify numbers, making them easier to work with while maintaining a reasonable level of accuracy.