A good answer might be:

0.112 = 0×1 + 1×(0.5) + 1×(0.25) = 0.75

Include or Exclude?

In a binary representation a particular power of two is either included in the sum or not, since the digits are either "1" or "0". A "1" bit in a position means to include the corresponding power of two in the sum. In converting representations, it is convenient to have a table.

Power of 2 3 2 1 0.-2-3-4-5
Decimal 8 4 2 1 .0.5 0.250.1250.0625
Include?         .        


QUESTION 6:

What is 100.012 expressed in decimal?