
When you ask "What number is halfway between 88 and 549?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=88 and Y=549.

To find the number halfway between 88 and 549, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 88 and 549 into our formula, we get:
(88 + 549)/2 = 318.5
Thus, the number halfway between 88 and 549 is 318.5.
To check that our answer is correct, we subtract 88 from 318.5 and subtract 318.5 from 549 and compare the two numbers:
318.5 - 88 = 230.5
549 - 318.5 = 230.5
As you can see, the halfway number is 230.5 higher than 88 and 230.5 lower than 549. Therefore, our halfway between answer of 318.5 above is correct.
Halfway Between
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Halfway Between 88 and 550
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