A fun interactive game from the BBC Website called Questionauts.
Have a go on TutPup. Don't forget the login password and name (in your planners!)
Woodlands MathsZone is an interesting site with a wide variety of maths games.
Maths Boot Camp focuses on real Year 6 SATs questions.
Bitesize is a useful maths resource by the BBC - its also where Questionaut (above) comes from!
Gut Instinct is another game from the BBC combining English, Maths and Science.