A wooden panel is prepared by cutting a square hole out of a rectangular board.

Work out an estimate for the area of the wooden panel.
Is your answer to part (a) an underestimate or an overestimate? Give a reason for your answer.
Practise OCR GCSE Maths Estimating with exam-style questions for Foundation and Higher tier. 64 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.