1) Perform addition in the 2's complement form: 11011001+11100111; 2) Multiply 01010011 by 11000101 in the 2's complement form%3; 3) Convert (254.723),, to binary number, Conversion error

Please solve all 5 in 20-30 min

Extracted text: 1) Perform addition in the 2's complement form: 11011001+11100111; 2) Multiply 01010011 by 11000101 in the 2's complement form%3; 3) Convert (254.723),, to binary number, Conversion error <2"; 4)="" convert="" (8b3f),="" to="" decimal="" number;="" 5)="" convert="" binary="" code="" 010110="" to="" gray="">