
When you ask "What number is halfway between 40 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=40 and Y=272.

To find the number halfway between 40 and 272, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 272 into our formula, we get:
(40 + 272)/2 = 156
Thus, the number halfway between 40 and 272 is 156.
To check that our answer is correct, we subtract 40 from 156 and subtract 156 from 272 and compare the two numbers:
156 - 40 = 116
272 - 156 = 116
As you can see, the halfway number is 116 higher than 40 and 116 lower than 272. Therefore, our halfway between answer of 156 above is correct.
Halfway Between
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Halfway Between 40 and 273
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