3
It is 12 more than -9 and 12 less than 15
9 + 15 = 24
24/2 = 12
-9 + 12 = 3
15 - 12 = 3
12
Halfway between 10 and 15 is (10 + 15) ÷ 2 = 121/2
Halfway between 8 and 9
What number is halfway between 8 & 9
11.5 is halfway between 8 and 15
10 is the number halfway between -5 and 15.It is: 5
15
-5
22.5
It is 15
The halfway number is (15 + 129) /2 = 144/2 = 72
Halfway between 2/9 and 5/9 is 3.5/9, more correctly expressed as 7/18.