When you ask "What number is halfway between 81 and 826?" 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=826.
To find the number halfway between 81 and 826, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 826 into our formula, we get:
(81 + 826)/2 = 453.5
Thus, the number halfway between 81 and 826 is 453.5.
To check that our answer is correct, we subtract 81 from 453.5 and subtract 453.5 from 826 and compare the two numbers:
453.5 - 81 = 372.5
826 - 453.5 = 372.5
As you can see, the halfway number is 372.5 higher than 81 and 372.5 lower than 826. Therefore, our halfway between answer of 453.5 above is correct.
Halfway Between
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Halfway Between 81 and 827
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