When you ask "What number is halfway between 68 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=68 and Y=487.
To find the number halfway between 68 and 487, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 487 into our formula, we get:
(68 + 487)/2 = 277.5
Thus, the number halfway between 68 and 487 is 277.5.
To check that our answer is correct, we subtract 68 from 277.5 and subtract 277.5 from 487 and compare the two numbers:
277.5 - 68 = 209.5
487 - 277.5 = 209.5
As you can see, the halfway number is 209.5 higher than 68 and 209.5 lower than 487. Therefore, our halfway between answer of 277.5 above is correct.
Halfway Between
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Halfway Between 68 and 488
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