5+(?)=−6
To know how much we need to add to the number 5 to get minus 6, we will count the number of steps between the numbers.
Also, we'll pay attention to which direction we moved, if we went right then the number is positive, if we went left the number will be negative.
We'll locate the number 5, and move left until we reach minus 6, where each step represents one whole number, as follows:
We'll discover that the number of steps is 11, since we went left, the number will be minus 11.