Could someone help me with these please? Also, what significance does "signed" vs "unsigned" mean in these cases below? Some steps would be very helpful. Thanks for helping me understand!

1. Convert the decimal number to signed 8-bit binary: -35
2. Convert the unsigned 8-bit hexadecimal to unsigned 8-bit binary: 0x80
3. Convert the decimal number to signed 8-bit binary: 127
4. Convert the decimal number to signed 8-bit binary: -100
5. Convert the signed 8-bit binary number to decimal: 1010 1010