Booth bit-pair recoding technique In Booth's bit-pair recording technique how to multiply a multiplicand with -2 or 2? For example while multiplying 01101(+13, multiplicand) and 11010(-6, multiplier), we get 01101 x 0-1-2.

How to multiply the multiplicand using -2?
In bit recoding multiplication, e.g.   01101 times 0, -1, or -2. 


For multiplying with -1:
Take 2's complement of 01101 i.e: 10011
For multiplying with -2:
Add 2's complement of 01101 i.e: 10011 + 10011= 100110