I have uploaded the school's calculation policy and guidance documents for anyone who would like guidance on how to help their children with maths at home. These are in the 'Key Information' > 'Policies' section of the website.
The documents show you the expectation of how your children should be calculating using the four operations of addition, subtraction, division and multiplication. The documents also show you the expectations of what the children should be learning, according to their year group.
I have also uploaded a very useful document showing how the children should be calculating using fractions in Key Stage 2.
Documents courtesy of the White Rose Maths Hub and Abingdon Primary school