42
107
It is: (63+57)/2 = 60
It is: 75
42
(17 + 63)/2 = 80/2 = 40
There are lots of numbers between 63 and 720. Exactly halfway between them is 391.50, so that may be the answer you are looking for.
halfway between 154 and 164 is 10
Do you mean like what is the number exactly between them. 53+63=116/2=58
20
Halfway between 10 and 15 is (10 + 15) ÷ 2 = 121/2
10 is the number halfway between -5 and 15.It is: 5