## AQA Computer Science GCSE

### 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.

Binary Addition – how to do it

Questions to work through:

More Binary Addition Questions – questions to try in class

And some exam style questions:

Exam Style Binary Addition Questions (answers)

#### 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.

Binary Shifts – slides from class

Binary Shifts – summary - a summary of how shifts work

Binary Shift Examples – to stick in

Here's a copy of some stuff I wrote on the board in class:

Key points about binary shifts

There are some exam questions:

Binary Shift exam questions – slides

Binary Shift exam questions – printable (answers)