When you ask "What number is halfway between 47 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=47 and Y=398.
To find the number halfway between 47 and 398, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 398 into our formula, we get:
(47 + 398)/2 = 222.5
Thus, the number halfway between 47 and 398 is 222.5.
To check that our answer is correct, we subtract 47 from 222.5 and subtract 222.5 from 398 and compare the two numbers:
222.5 - 47 = 175.5
398 - 222.5 = 175.5
As you can see, the halfway number is 175.5 higher than 47 and 175.5 lower than 398. Therefore, our halfway between answer of 222.5 above is correct.
Halfway Between
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Halfway Between 47 and 399
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