The letter attached will give you some more information about what to expect in the statutory Multiplication Table Check for year four pupils.
Practising multiplication facts will support any child in their maths development. When children know their times table facts fluently, it allows them to grasp more complex maths concepts as they do not have to spend time trying to work out the multiplication facts, which can then slow them down or prevent them from remembering what they are trying to do.
Below are a range of websites which have multiplication games for children to try out.