When you ask "What number is halfway between 75 and 270?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=75 and Y=270.
To find the number halfway between 75 and 270, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 270 into our formula, we get:
(75 + 270)/2 = 172.5
Thus, the number halfway between 75 and 270 is 172.5.
To check that our answer is correct, we subtract 75 from 172.5 and subtract 172.5 from 270 and compare the two numbers:
172.5 - 75 = 97.5
270 - 172.5 = 97.5
As you can see, the halfway number is 97.5 higher than 75 and 97.5 lower than 270. Therefore, our halfway between answer of 172.5 above is correct.
Halfway Between
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Halfway Between 75 and 271
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