When you ask "What number is halfway between 87 and 338?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=87 and Y=338.
To find the number halfway between 87 and 338, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 338 into our formula, we get:
(87 + 338)/2 = 212.5
Thus, the number halfway between 87 and 338 is 212.5.
To check that our answer is correct, we subtract 87 from 212.5 and subtract 212.5 from 338 and compare the two numbers:
212.5 - 87 = 125.5
338 - 212.5 = 125.5
As you can see, the halfway number is 125.5 higher than 87 and 125.5 lower than 338. Therefore, our halfway between answer of 212.5 above is correct.
Halfway Between
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Halfway Between 87 and 339
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