#### Practice Addition and Subtraction Multiple

##### Difficulty:

Getting started with multiple and nested addition and subtraction of both positive and negative numbers. Remember to calculate the inner brackets first and that subtracting a negative is the same as adding.

Question: What is 1 + (0 - (1 + 1))?

So we do the innermost brackets first 1 + (0 - 2)

This becomes 1 + -2

Answer is -1