Real Number Whole Numbers:0,1,2,3,4,5,6,7,8,9,10,etc. Counting Numbers:1,2,3,4,5,6,7,8,etc. Natural Numbers:which is whole or counting numbers depends on the topic Integers:-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,etc.
If Dylan owes half as much as he used to that would imply that the 28$ would be divided by two which would be 14$, which means that half of what he owed 28$ would now be 14$.