https://uk.ixl.com/promo?partner=google&campaign=1187&adGroup=Key+Stage+2&gclid=CPPa8teS_8kCFQbnwgodgOIB6A  IXL have separate pages of skills linked to individual Year group.  The Y6 page has links to practise both English and Maths skills.  Pages are then split into skills of which has a practise question for the children to think about. 

https://www.bbc.co.uk/bitesize/learn BBC Education have produced a whole host of materials for KS2.  Follow the KS2 link and then select either Maths or English.   Each area usually has an information section for reading, plus an activity and then quiz which is marked online.  Some aspects require a subscription. 

https://www.educationquizzes.com/ks2/maths/  A site with both Maths and English based quizzes which are marked as you go along. 

https://www.spellzone.com/word_lists/index.cfm Pupils often use this website to help with spelling rules.  

http://www.keystage2literacy.co.uk/spellings-menu.html this websites allows the children to practise their spelling rules.  

http://www.crickweb.co.uk/ks2literacy.html  A wide range of Literacy games.  

http://www.emaths.co.uk/index.php/student-resources/past-papers/key-stage-2-ks2-sat-past-papers here you will find the old Key stage 2 SATS papers. They are still useful to practice.  

https://claritymaths.uk/ a site that has KS2 SATS papers along with maths tutorials and maths games.