Here are some documents which you might find helpful if you get stuck on your Maths this week.
If you are still stuck - you could search on google for some more examples, or just e-mail me and I'll try and help you through it.
When you look at some of the sheets where they have added - they have written their carries at the top instead of under the line in case it looks strange. They are still doing the same method, just recording it slightly differently.