A good answer might be:

0 1111 100
  0010 1100
  0101 0101
  ---------
  1000 0001
  
(No overflow)

More Practice

Practice performing this algorithm mechanically, like a computer. Detect overflow by looking at the carry-out of the leftmost column. You don't need to convert the representation to decimal.

QUESTION 7:

Add these numbers, represented in eight bits:

     
0110 1100
1001 1111
---------