Need a little help with converting, adding & multiplying binary/hexadecimal numbers. Please show full working so I can understand.

Thanks.

Q1. Please show your working! a) Convert the following binary numbers to base ten -1011 - 10101 b) Convert the following base ten numbers to binary. -25 2018 C) Add the following binary numbers: 1111 0110 1010 1100 1101 1011 +1 D) Multiply the following binary numbers: 110 x 1100 1011 x 10 E) Convert the following bexademical numbers directly to binary 7E66 -6098 F) Convert the following binary numbers direct to hexadecimal: - 1010001000100000 - 1100101010101010