When you ask "What number is halfway between 72 and 273?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=72 and Y=273.
To find the number halfway between 72 and 273, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 273 into our formula, we get:
(72 + 273)/2 = 172.5
Thus, the number halfway between 72 and 273 is 172.5.
To check that our answer is correct, we subtract 72 from 172.5 and subtract 172.5 from 273 and compare the two numbers:
172.5 - 72 = 100.5
273 - 172.5 = 100.5
As you can see, the halfway number is 100.5 higher than 72 and 100.5 lower than 273. Therefore, our halfway between answer of 172.5 above is correct.
Halfway Between
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Halfway Between 72 and 274
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