Is there anyone here good with computational methods (it's basically like GCSE math)?

I'm stuck on a few question and i really want to get a merit or distinction grade in this assignment so i have a good chance of getting excepted into University!

So here's the first question i need help on....

*Calculate the following Binary digits:*

(for this one its an addition (the minus sign is basicaly a space))

*11111-*

-01101

-10111

-01101

-10111

(for this one its an multiplication)

*1011*

1010

1010