More White Rose Resources
White Rose also provide a Problem of the Day under their resources heading on the Home Learning page. We had been using these resources in class to boost our problem solving skills but they are available free to all. They are certainly not compulsory, but they are a good mix of questions for KS1 and 2 and will remain online even when the the month has ended. Give them a try if you want an extra/different challenge.
If you happen to be on twitter, there is also a daily 'Maths Party' each morning- it might be worth a look.