When you ask "What number is halfway between 7 and 286?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=286.
To find the number halfway between 7 and 286, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 286 into our formula, we get:
(7 + 286)/2 = 146.5
Thus, the number halfway between 7 and 286 is 146.5.
To check that our answer is correct, we subtract 7 from 146.5 and subtract 146.5 from 286 and compare the two numbers:
146.5 - 7 = 139.5
286 - 146.5 = 139.5
As you can see, the halfway number is 139.5 higher than 7 and 139.5 lower than 286. Therefore, our halfway between answer of 146.5 above is correct.
Halfway Between
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Halfway Between 7 and 287
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