That Blue Square Thing

AQA Computer Science GCSE

July 2019: the AQA CompSci area is almost complete. Most of the content for units 3-6 is now up and there's quite a lot of Unit 7 material. There's still some work to do, particularly on Paper 1 units, but it's getting there.

Data Representation - Binary Maths

You need to be able to add together binary numbers and use binary shifts. Neither of these are too tricky, but you need to work on them.

Binary Addition

You need to be able to add together up to three binary numbers.

PDF iconBinary Addition - how to do it

PDF iconBinary Addition - adding 3 numbers together

PDF iconBinary Addition Questions - AQA exam style questions

PDF iconBinary Addition Questions 1

PDF iconBinary Addition Questions 2

Binary Shifts

Binary shifts can be used to multiply and divide by factors of 2. The way questions are asked on them can be quite tricky at times.

PDF iconBinary Shifts - presentation used in class

PDF iconBinary Shifts - summary - a summary of how shifts work

PDF iconBinary Shift Questions

PDF iconBinary Maths Questions 3 - addition and binary shifts