binary:

sign: exponent: significand:

If the sign bit is 0 it is a positive number, if the sign bit is 1 it is a negative number:
sign:

Convert the exponent to decimal:
exponent:

Subract the 127 from the exponent:
exponent:

Add "1." to the beginning of the significand:
significand:

Your floating point number now need to be converted from: