Hi,
If your answer is 2.5 or 3, it is enough to write 2.5 or 3 respectively. We have mentioned answer should be till two decimal places because some real numbers are recursive and some may have more than 2 decimal places, for such real answers you have to round it off to two decimal places.
Regards
Srikanth Venkatesan
Course Instructor
IITM Online Degree Project