When you ask "What number is halfway between 82 and 425?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=82 and Y=425.
To find the number halfway between 82 and 425, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 425 into our formula, we get:
(82 + 425)/2 = 253.5
Thus, the number halfway between 82 and 425 is 253.5.
To check that our answer is correct, we subtract 82 from 253.5 and subtract 253.5 from 425 and compare the two numbers:
253.5 - 82 = 171.5
425 - 253.5 = 171.5
As you can see, the halfway number is 171.5 higher than 82 and 171.5 lower than 425. Therefore, our halfway between answer of 253.5 above is correct.
Halfway Between
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Halfway Between 82 and 426
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