I'm going to attach a copy of the calculation policy for St. Mark's (and indeed the whole locality) - it is on the site but, this way, you don't have to hunt for it - so parents and carers can see what we do (it's how they learnt it at school when you get to Year 5 and 6). Also, the SATS revision document a bit lower down on the page has links to top tips on different areas of Maths.
Below are a link to a SATS revision timetable that begins April 9th. It offers links to explanations that will be of use in the revision process. Additionally, I have attached copies of the Easter revision homework and answer sheets that your child will be given hard copies of.