To round 90.1 to the next whole number, do as follows. In other words, this is the nearest integer rounding of 90.1.
There are two components to 90.1. the fractional part to the right of the decimal point and the integer part to the left of it:
Integer Part: 90
Fractional Part: 10
Using the following guidelines, we want to round it so that it only has an integer part:
We just delete the fractional element from 90.1 if the first digit is less than 5 to obtain the result.
If 90.1’s fractional portion contains a first digit that is 5 or higher, we add 1 to the integer part and subtract the fractional part to get the result.
The fractional part’s first digit is 1, and 1 is less than 5. Therefore, to round 90.1 to the next whole number, we simply eliminate the fractional portion, giving us: 90
