When you ask "What number is halfway between 81 and 758?" 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=758.
To find the number halfway between 81 and 758, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 758 into our formula, we get:
(81 + 758)/2 = 419.5
Thus, the number halfway between 81 and 758 is 419.5.
To check that our answer is correct, we subtract 81 from 419.5 and subtract 419.5 from 758 and compare the two numbers:
419.5 - 81 = 338.5
758 - 419.5 = 338.5
As you can see, the halfway number is 338.5 higher than 81 and 338.5 lower than 758. Therefore, our halfway between answer of 419.5 above is correct.
Halfway Between
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Halfway Between 81 and 759
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