IXL have separate pages of skills linked to individual Year groups. The Y5 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.
BBC Education have produced a whole host of materials for all curriculum subjects at KS2. Follow the Primary link, followed by England KS2 and then select any area of the curriculum. Each area usually has an information section for reading, a short informational video and often an activity and then quiz which is marked online. Some aspects require a subscription.
A range of English games and activities.
A game of Hangman to help with spellings.