When you ask "What number is halfway between 86 and 459?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=86 and Y=459.
To find the number halfway between 86 and 459, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 86 and 459 into our formula, we get:
(86 + 459)/2 = 272.5
Thus, the number halfway between 86 and 459 is 272.5.
To check that our answer is correct, we subtract 86 from 272.5 and subtract 272.5 from 459 and compare the two numbers:
272.5 - 86 = 186.5
459 - 272.5 = 186.5
As you can see, the halfway number is 186.5 higher than 86 and 186.5 lower than 459. Therefore, our halfway between answer of 272.5 above is correct.
Halfway Between
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Halfway Between 86 and 460
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