An embedded sensor in a marine research drone outputs depth measurements encoded as hexadecimal numbers. A current reading is given by the hexadecimal value 2D2\text{D}2D.
Convert this hexadecimal number to binary, and then convert that binary value to denary.
117 exam-style questions on Edexcel GCSE Computer Science Binary, covering Binary representation and number of states, Unsigned and two's complement integers, Converting denary and 8-bit binary, Binary addition and binary shifts, Concept of overflow, and Hexadecimal notation and conversion. Each one has a worked solution and a mark scheme showing where the marks go.