Having covered what hex is, and how to convert between it and binary, this video looks at how you convert back and forth between hex and denary (decimal).
These kinds of questions need lots of practice. I'd suggest picking random numbers for yourself and converting them. Use online converters like this to check your answers: https://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html
Made for OCR GCSE Computer Science Paper 1 (J277).
Part of the 1.2 Memory and storage topic: https://www.youtube.com/playlist?list=PL04uZ7242_M4_vw6_253OvWZ22tgtnn3T
Full Paper 1 playlist: https://www.youtube.com/playlist?list=PL04uZ7242_M7q9Jij-eP1ywG5mgj9iLrp
0:00 Converting from hex to denary
3:40 Converting from denary to hex
