When you ask "What number is halfway between 3 and 285?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=3 and Y=285.
To find the number halfway between 3 and 285, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 285 into our formula, we get:
(3 + 285)/2 = 144
Thus, the number halfway between 3 and 285 is 144.
To check that our answer is correct, we subtract 3 from 144 and subtract 144 from 285 and compare the two numbers:
144 - 3 = 141
285 - 144 = 141
As you can see, the halfway number is 141 higher than 3 and 141 lower than 285. Therefore, our halfway between answer of 144 above is correct.
Halfway Between
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Halfway Between 3 and 286
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