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Answer:

Power of 2 3 2 1 0.-1-2-3-4
  8 4 2 1.0.5 0.250.1250.0625
Include? 0 1 1 0 . 1 0 0 1
sum = 4 + 2 + 0.5 +0.0625 = 6.5625

Adding fixed point Expressions

Here is another number: 00010100. This expression represents decimal 1.25.

Here is the familiar binary addition algorithm performed with the two bit patterns, and the usual decimal addition performed with their decimal equivalent.

fixed point      as decimal
01101001      6.5625
00010100      1.2500

     
01111101       7.8125

QUESTION 8:

Of course, the question is, does the sum of the fixed point expressions (01111101) represent the sum of the decimal expressions (7.8125)?

Power of 2 3 2 1 0.-1-2-3-4
  8 4 2 1.0.5 0.250.1250.0625
Include? 0 1 1 1 . 1 1 0 1

You can satisfy your burning curiosity by adding up the included decimals in the table.