What is half way beetween 15 and 37

An easy way to find it (aka the avarage) is to add the two numbers together and divide the result by 2 so

15+37=52

52/2=26

another way is to subtract 15 from 37 and divide the result by 2, then you add this to the smaller number so

37-15=22

22/2=11

15+11=26

also

37-11=26