When you ask "What number is halfway between 42 and 508?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=508.
To find the number halfway between 42 and 508, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 508 into our formula, we get:
(42 + 508)/2 = 275
Thus, the number halfway between 42 and 508 is 275.
To check that our answer is correct, we subtract 42 from 275 and subtract 275 from 508 and compare the two numbers:
275 - 42 = 233
508 - 275 = 233
As you can see, the halfway number is 233 higher than 42 and 233 lower than 508. Therefore, our halfway between answer of 275 above is correct.
Halfway Between
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Halfway Between 42 and 509
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