What is the difference between 108 and -16?

Well, all you would have to do to find the difference between a positive and a negative number is change the negative number to a positive number and add it to 108. The answer to this one in particular would be 124. But this method can only be used in the case of a positive and a negative. If you wanted to get the diff. between two positives, simply subtract the larger number (if possible) from the smaller number, and there's your answer.