When you ask "What number is halfway between 63 and 398?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=63 and Y=398.
To find the number halfway between 63 and 398, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 398 into our formula, we get:
(63 + 398)/2 = 230.5
Thus, the number halfway between 63 and 398 is 230.5.
To check that our answer is correct, we subtract 63 from 230.5 and subtract 230.5 from 398 and compare the two numbers:
230.5 - 63 = 167.5
398 - 230.5 = 167.5
As you can see, the halfway number is 167.5 higher than 63 and 167.5 lower than 398. Therefore, our halfway between answer of 230.5 above is correct.
Halfway Between
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Halfway Between 63 and 399
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