When you ask "What number is halfway between 83 and 218?" 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=218.
To find the number halfway between 83 and 218, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 83 and 218 into our formula, we get:
(83 + 218)/2 = 150.5
Thus, the number halfway between 83 and 218 is 150.5.
To check that our answer is correct, we subtract 83 from 150.5 and subtract 150.5 from 218 and compare the two numbers:
150.5 - 83 = 67.5
218 - 150.5 = 67.5
As you can see, the halfway number is 67.5 higher than 83 and 67.5 lower than 218. Therefore, our halfway between answer of 150.5 above is correct.
Halfway Between
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Halfway Between 83 and 219
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