When you ask "What number is halfway between 81 and 245?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=81 and Y=245.
To find the number halfway between 81 and 245, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 245 into our formula, we get:
(81 + 245)/2 = 163
Thus, the number halfway between 81 and 245 is 163.
To check that our answer is correct, we subtract 81 from 163 and subtract 163 from 245 and compare the two numbers:
163 - 81 = 82
245 - 163 = 82
As you can see, the halfway number is 82 higher than 81 and 82 lower than 245. Therefore, our halfway between answer of 163 above is correct.
Halfway Between
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Halfway Between 81 and 246
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