When you ask "What number is halfway between 83 and 438?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=83 and Y=438.
To find the number halfway between 83 and 438, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 83 and 438 into our formula, we get:
(83 + 438)/2 = 260.5
Thus, the number halfway between 83 and 438 is 260.5.
To check that our answer is correct, we subtract 83 from 260.5 and subtract 260.5 from 438 and compare the two numbers:
260.5 - 83 = 177.5
438 - 260.5 = 177.5
As you can see, the halfway number is 177.5 higher than 83 and 177.5 lower than 438. Therefore, our halfway between answer of 260.5 above is correct.
Halfway Between
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Halfway Between 83 and 439
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