When you ask "What number is halfway between 83 and 216?" 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=216.
To find the number halfway between 83 and 216, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 83 and 216 into our formula, we get:
(83 + 216)/2 = 149.5
Thus, the number halfway between 83 and 216 is 149.5.
To check that our answer is correct, we subtract 83 from 149.5 and subtract 149.5 from 216 and compare the two numbers:
149.5 - 83 = 66.5
216 - 149.5 = 66.5
As you can see, the halfway number is 66.5 higher than 83 and 66.5 lower than 216. Therefore, our halfway between answer of 149.5 above is correct.
Halfway Between
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Halfway Between 83 and 217
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