Answer
Rounding down: If the last digit is less than 5, then the last digit will stay the same and all of the other digits to the right are dropped; Rounding up: If the last digit is 5 or more, then the last digit will be increased by 1 and all of the other digits to the right are dropped.
Work Step by Step
Rounding down: If the last digit is less than 5, then the last digit will stay the same and all of the other digits to the right are dropped; Rounding up: If the last digit is 5 or more, then the last digit will be increased by 1 and all of the other digits to the right are dropped.