100
80 + 20 = 100
120 - 20 = 100
Wiki User
∙ 2014-10-19 19:24:15The halfway point between 70 and 80 is (70 + 80) ÷ 2 = 75
Halfway between 30 and 80 is (30 + 80) ÷ 2 = 55.
It is: 50
(80 + 90) / 2 = 85Therefore, the number between 80 and 90 is 85.
65
115 is halfway between 80 and 150
The halfway point between 70 and 80 is (70 + 80) ÷ 2 = 75
Halfway between 30 and 80 is (30 + 80) ÷ 2 = 55.
105.105 is half way between 90 and 120.
It is: 55
It is: (20+80)/2 = 50
73
It is: 70
80
It is: 50
(80 + 90) / 2 = 85Therefore, the number between 80 and 90 is 85.
(50+120)/2 = 170/2 = 85