Good luck. And don't forget to show your working – OCR reads every line, not just the answer box.
If you calculate the volume of a sphere as 113.1 cm³ (using 3.14 for π), OCR might give you 0 marks. Why? Because the true answer is 36π cm³ . By rounding, you introduced an error. OCR wants the truth , not the decimal. Gcse Maths Ocr
Here is the most interesting fact of all. In the real world, an engineer who gets 100% on an AQA paper might build a bridge that collapses because they rounded pi. An engineer who scrapes a pass on OCR? Good luck