Summary of chapter 2 (Real Numbers)

1. Any numbers that exist on the number line.

1.1. Negative and Positive numbers

1.1.1. E.g. -67, 789,1/4, 0.57,

2. Addition and subtraction of intergers.

2.1. E.g. -8+7=-1

2.2. E.g. 80-23=-57

3. Multiplication division and combined operations

3.1. E.g. -8x7=-56

3.2. E.g. -8/4=-2