please help me solve this question and show your work. circle the answers for me. Thank you

2. Perform the following binary multiplications, assuming 8-bit unsigned integers: (3 points) a) 1100 x 101 b) 10 101 X 111 c) 11010 x 1100 3. Add the following 8-bit signed magnitude binary numbers: (3 points) a) 01100100 +00 010100 b) 01001110 +00101101 c) 01001110 +01001111