For Maths if the children can score a very good mark in their Arithmetic paper then this will help for the following 2 papers. You can print off these practice papers and do them at home. They are just like the ones they will do in May. Allow them 30 minutes to complete them before marking with your child so they can see the mistakes.
As part of the Maths SAT there are 2 reasoning papers. These papers may have some straightforward questions but the purpose of them is to see if the child can apply their knowledge in different ways. Below are some types of questions they would come across where they can apply their knowledge. They do not need to be timed but you can go through the answers together afterwards.
In the Reading SAT your child is given different styles of questions to assess their understanding of the text. Below are mini comprehensions which they can practise the different types of questions. You do not have to time them but allow them to try independently and then you can go through the answers together.