When you ask "What number is halfway between 3 and 487?" 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=487.
To find the number halfway between 3 and 487, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 487 into our formula, we get:
(3 + 487)/2 = 245
Thus, the number halfway between 3 and 487 is 245.
To check that our answer is correct, we subtract 3 from 245 and subtract 245 from 487 and compare the two numbers:
245 - 3 = 242
487 - 245 = 242
As you can see, the halfway number is 242 higher than 3 and 242 lower than 487. Therefore, our halfway between answer of 245 above is correct.
Halfway Between
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Halfway Between 3 and 488
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