When you ask "What number is halfway between 27 and 207?" 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=207.
To find the number halfway between 27 and 207, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 27 and 207 into our formula, we get:
(27 + 207)/2 = 117
Thus, the number halfway between 27 and 207 is 117.
To check that our answer is correct, we subtract 27 from 117 and subtract 117 from 207 and compare the two numbers:
117 - 27 = 90
207 - 117 = 90
As you can see, the halfway number is 90 higher than 27 and 90 lower than 207. Therefore, our halfway between answer of 117 above is correct.
Halfway Between
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Halfway Between 27 and 208
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