Have a go on the Top Marks website. There are lots of good games and activities.
Try Robot addition. This can be accessed using the following link:
https://www.topmarks.co.uk/addition/robot-addition
Try the game hit the button. This can be accessed using the following link:
https://www.topmarks.co.uk/Search.aspx?q=hit%20the%20button
Number bonds - Make 10 and Addition within 10.
Doubles - Doubles to 10.
Halves - Halves to 10.