Question

What is 3.1 rounded to the nearest whole number

Answer 1

3, anything under .5 is the same number. if its 5 and above the next number up

Answer 2

To do this you have to round the 3. It is the same things as asking to round to the ones place.
To the right of the 3, is a 1. Since this digit is not bigger than a 5, the 3 stays the same.
Your answer is 3