Here is a link to some great maths lessons with tutorials, activities and answers - it is important to continue learning and refresh your learning on topics you haven't visited for a while. 

https://whiterosemaths.com/homelearning/year-6/

Click on “For Kids” to access some fun games to practise speed of recall of times tables.

https://www.topmarks.co.uk/maths-games/hit-the-button

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

A site with both Maths and English based quizzes which are marked as you go along.

http://www.educationquizzes.com/ks2/maths/

Don't forget you can also access your Active-Learn account for maths activities.