does anyone know where I can get practice questions for core maths from? I have got the official AQA exam papers for 2018, 2017 and 2016. Are there any other websites which have practice questions for AQA core maths?
If Core Maths you mean Further Maths Core Pure, again you can use any exam board for more questions but you will have to pick and choose - as the Further Maths specs aren't the same from every exam board.
Also you can try the older specs if you got enough time.
Edit: Physicsandmathstutor is very good for getting questions.