good explanation needed I need help

Question

 If the mean score on the math test is 88%, how far is each of the following scores from the mean?

90  94  80  85  91     

Answer 1

Imagine a number line with the mean marked (88)

Then you need to find the distance of each of these five five values from 88 on the number line.

[ if x is the value then the distance will be the absolute value of (x-88) ]