The half term holiday is about to begin.  If you are stuck for ideas, the Wildlife Trust is about to launch it's 30 Day's Wild campaign.  If you click on this: https://www.wildlifetrusts.org/ it will take you straight to their website.

Alternatively, you can try these: https://www.topmarks.co.uk/Search.aspx?q=addition%20and%20subtraction activities on the TopMarks website. TopMarks offers fun activities where you learn and develop your skills without even realising!

Have fun!