If you want to round off all the amounts in RT Table, follow the PCR as given below:
Similarly, do for all from 2-A.
This PCR is created by copying the standard PCR XVAL. This will further be inserted in schema INAL as below:
Copy the Standard Schema INAL to whatever name you feel like, by TCode PE01, and insert as below in screen shot:
VKAL is the PCR copied from Standard PCR XVAL. Test for the scenario, and you will find that the values are rounded off.