When you ask "What number is halfway between 49 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=49 and Y=398.
To find the number halfway between 49 and 398, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 398 into our formula, we get:
(49 + 398)/2 = 223.5
Thus, the number halfway between 49 and 398 is 223.5.
To check that our answer is correct, we subtract 49 from 223.5 and subtract 223.5 from 398 and compare the two numbers:
223.5 - 49 = 174.5
398 - 223.5 = 174.5
As you can see, the halfway number is 174.5 higher than 49 and 174.5 lower than 398. Therefore, our halfway between answer of 223.5 above is correct.
Halfway Between
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Halfway Between 49 and 399
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