Try some of the activities below:
A site with links to old style Key Stage 2 Maths Papers, Maths Tutorials as well as Maths Games. Some of these games are linked to Memory and would therefore help pupils to retain key information.
http://www.online-maths-tutor.com/
Click on “For Kids” to access some fun games to practise speed of recall of times tables.
This site has loads of Maths games which help to practise a range of skills.
http://www.mathplayground.com/games.html
Loads of Maths games on a range of Mathematical concepts.
https://www.sheppardsoftware.com/math.htm
The BBC site full of maths activities and skills practise