Add and subtract integers

This week for maths we are learning how to add and subtract integers.  In the first screenshot I got 70% I know how to add and subtract integers but I don’t know how to do it with larger numbers. In the second screenshot it was the same thing but it was a lot easier. In the last screenshot I got it all right and it was kind of easy for me. I would practise these sites so I can get a better understanding of adding and subtracting integers.