Binary addition involves adding binary numbers by applying the following rules: 0 + 0 = 0 0 + 1 = 1 1 + 0 = 1 1 + 1 = 0 with a carry of 1 to the next column. To perform multi-bit addition, a half or full adder table is used to calculate the sum and carry out for each bit while accounting for any carries from the previous column. Examples are provided showing how addition is performed on multiple bits using the adder table and propagating any carries to the next position.