When you ask "What number is halfway between 8 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=8 and Y=549.
To find the number halfway between 8 and 549, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 549 into our formula, we get:
(8 + 549)/2 = 278.5
Thus, the number halfway between 8 and 549 is 278.5.
To check that our answer is correct, we subtract 8 from 278.5 and subtract 278.5 from 549 and compare the two numbers:
278.5 - 8 = 270.5
549 - 278.5 = 270.5
As you can see, the halfway number is 270.5 higher than 8 and 270.5 lower than 549. Therefore, our halfway between answer of 278.5 above is correct.
Halfway Between
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Halfway Between 8 and 550
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