Two's Complement Representation

[sandy.bridge]

Homework Statement

When determining the two's complement of a decimal number, one converts the decimal to binary, finds the complement of each individual digit, adds one, and there we have it.

For example,
-4=1100--->0011+1=0100=+4

However, when I apply the same logic for -99, I don't seem to get the same type of results
-99=11100011--->00011100+1=00011101=29
does anyone see where I am going wrong here?

 

[sandy.bridge]

Figured it out!