When you ask "What number is halfway between 57 and 272?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=272.
To find the number halfway between 57 and 272, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 272 into our formula, we get:
(57 + 272)/2 = 164.5
Thus, the number halfway between 57 and 272 is 164.5.
To check that our answer is correct, we subtract 57 from 164.5 and subtract 164.5 from 272 and compare the two numbers:
164.5 - 57 = 107.5
272 - 164.5 = 107.5
As you can see, the halfway number is 107.5 higher than 57 and 107.5 lower than 272. Therefore, our halfway between answer of 164.5 above is correct.
Halfway Between
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Halfway Between 57 and 273
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