When you ask "What number is halfway between 27 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=27 and Y=272.
To find the number halfway between 27 and 272, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 27 and 272 into our formula, we get:
(27 + 272)/2 = 149.5
Thus, the number halfway between 27 and 272 is 149.5.
To check that our answer is correct, we subtract 27 from 149.5 and subtract 149.5 from 272 and compare the two numbers:
149.5 - 27 = 122.5
272 - 149.5 = 122.5
As you can see, the halfway number is 122.5 higher than 27 and 122.5 lower than 272. Therefore, our halfway between answer of 149.5 above is correct.
Halfway Between
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Halfway Between 27 and 273
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