0.75 ---------------the halfway number
There is no "the" rational" number since there is an infinity of them. Start with the number halfway between the two: (1/10+1/11)/2 = 21/220. Then try halfway between 1/10 and 21/220, and then halfway between 1/10 and that on. And so on.
The number that is halfway between one and one half (1½) and one (1) is one and one quarter (1¼)
It is 25.5 which is the number halfway between them.
1
0.75 ---------------the halfway number
The halfway number is 1/2*(750000 + 1000000) = 1/2*1750000 = 875000
1/4
There is no "the" rational" number since there is an infinity of them. Start with the number halfway between the two: (1/10+1/11)/2 = 21/220. Then try halfway between 1/10 and 21/220, and then halfway between 1/10 and that on. And so on.
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.
51
-0.5
The number that is halfway between one and one half (1½) and one (1) is one and one quarter (1¼)
It is (1.1+1)/2 = 1.05
Halfway between -1 and -2.
0.05
It is 25.5 which is the number halfway between them.