Binary 2s complement quiz

Answer the following binary 2s complement questions.
All answers must be 8 bits long. You get 1 mark for the 1's complement and 1 mark for the 2's complement.

Q1

1s complement
2s complement
  

Example 11010

128  64  32  16   8   4   2   1
0 0 0 1 1 0 1 0 number
1 1 1 0 0 1 0 1 1's complement
0 0 0 0 0 0 0 1 +1
1 1 1 0 0 1 1 0 2's complement