4, you add 13 and -5 (13 +-5=8) and divide by 2 to find the mid point (8 / 2 = 4).
you should notice that 4 is 9 less than 13 and 9 more than -5, hence the mid point.
a number that is halfway between 0 and 5 is 2.5.
(5 + 13)/2 = 18/2 = 9
10 is the number halfway between -5 and 15.It is: 5
The distance between 1 and .5 is (1 - .5)/2 which is .25. Add that to .5 to get the number halfway between the points: .5 + .25 = .75.So the point halfway between is .75 or 3/4.
The fraction halfway between 2/5 and 9/10 is 13/20
4.5
4
0.95
4.5
-5
5
8