Mrs Mistry, Faculty Lead for Maths,  has suggested the following websites:

https://ttrockstars.com/ 
Times table rockstars - every pupil has their own personal login for this to practise times tables

 https://www.bbc.co.uk/bitesize/subjects/z6vg9j6 
BBC bitesize - has a variety of teaching explanations and questions pupils can try online

https://www.topmarks.co.uk/maths-games/7-11-years/ordering-and-sequencing-numbers
Top marks - variety of games for various ages 

https://corbettmaths.com/
Corbett maths - has a variety of videos of topics and worksheets to match

https://www.studyladder.co.uk/?lc_set=
Study ladder - free to sign up, a variety of levels of topics and work