When you ask "What number is halfway between 81 and 346?" 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=346.
To find the number halfway between 81 and 346, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 346 into our formula, we get:
(81 + 346)/2 = 213.5
Thus, the number halfway between 81 and 346 is 213.5.
To check that our answer is correct, we subtract 81 from 213.5 and subtract 213.5 from 346 and compare the two numbers:
213.5 - 81 = 132.5
346 - 213.5 = 132.5
As you can see, the halfway number is 132.5 higher than 81 and 132.5 lower than 346. Therefore, our halfway between answer of 213.5 above is correct.
Halfway Between
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Halfway Between 81 and 347
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