1. Calculate A+B, A-B, AxB, and A/B for each of the following pairs of binary numbers. (Assume the first number in each pair-A and the second number -B) Append all numbers to 8 bits. Subtraction is not 2's complement. a. 10110101, 1011011 b. 110101, 10101 c. 1101011, 1010 d. 101011 110101 2. Subtract using 2's complement: a. 58-27 (decimal) a. 10101101 - 0101010 (binary) 3. Represent the following in binary sign magnitude format a. 63 (decimal) b. -89 (decimal) d. 109 4. Multiply the following numbers: a. 101010 x 1101 (binary) b. 11011011x 11010011 (binary) c. 426 x 135 (octal) d. B23D x 21 (hexadecimal) Divide the following numbers: a. 10110111 by 1010 (binary) b. 11010110 by 10101 (binary) c. 1101010 by 101 (binary)