When you ask "What number is halfway between 87 and 328?" 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=328.
To find the number halfway between 87 and 328, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 328 into our formula, we get:
(87 + 328)/2 = 207.5
Thus, the number halfway between 87 and 328 is 207.5.
To check that our answer is correct, we subtract 87 from 207.5 and subtract 207.5 from 328 and compare the two numbers:
207.5 - 87 = 120.5
328 - 207.5 = 120.5
As you can see, the halfway number is 120.5 higher than 87 and 120.5 lower than 328. Therefore, our halfway between answer of 207.5 above is correct.
Halfway Between
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Halfway Between 87 and 329
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