When you ask "What number is halfway between 82 and 189?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=82 and Y=189.
To find the number halfway between 82 and 189, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 189 into our formula, we get:
(82 + 189)/2 = 135.5
Thus, the number halfway between 82 and 189 is 135.5.
To check that our answer is correct, we subtract 82 from 135.5 and subtract 135.5 from 189 and compare the two numbers:
135.5 - 82 = 53.5
189 - 135.5 = 53.5
As you can see, the halfway number is 53.5 higher than 82 and 53.5 lower than 189. Therefore, our halfway between answer of 135.5 above is correct.
Halfway Between
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Halfway Between 82 and 190
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