Practice Addition and Subtraction Long

Difficulty: practice

Anybody and everybody is welcome to take a quiz it's all free and open but only logged in users will have their results saved, receive detailed feedback and be able to participate in the leaderboards.

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