Countdown to Exams - Day 3 - Addition and Subtraction

The focus for Day 3 is Addition and Subtraction. As well as being able to use the appropriate method to add and subtract complex numbers, we explore the rules regarding the addition and subtraction of positive and negative numbers which is often an area where simple marks are lost in an exam.

Here Matt looks at the methods for addition and subtraction and explores the idea of filling a bath to explain the laws surrounding the addition and subtraction of positive and negative numbers.

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