More or less

This task is about continuing a pattern.
a)  The arrows going from whare A to whare B in the diagram below make the words "is two more than" true.
     Fill the empty squares with numbers to make the diagram true.

 
b)  The arrows going from pear A to pear B in the diagram below make the words "is two less than" true.
     Fill the empty squares with numbers to make the diagram true.