When you ask "What number is halfway between 8 and 287?" 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=287.
To find the number halfway between 8 and 287, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 287 into our formula, we get:
(8 + 287)/2 = 147.5
Thus, the number halfway between 8 and 287 is 147.5.
To check that our answer is correct, we subtract 8 from 147.5 and subtract 147.5 from 287 and compare the two numbers:
147.5 - 8 = 139.5
287 - 147.5 = 139.5
As you can see, the halfway number is 139.5 higher than 8 and 139.5 lower than 287. Therefore, our halfway between answer of 147.5 above is correct.
Halfway Between
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Halfway Between 8 and 288
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