When you ask "What number is halfway between 81 and 846?" 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=846.
To find the number halfway between 81 and 846, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 846 into our formula, we get:
(81 + 846)/2 = 463.5
Thus, the number halfway between 81 and 846 is 463.5.
To check that our answer is correct, we subtract 81 from 463.5 and subtract 463.5 from 846 and compare the two numbers:
463.5 - 81 = 382.5
846 - 463.5 = 382.5
As you can see, the halfway number is 382.5 higher than 81 and 382.5 lower than 846. Therefore, our halfway between answer of 463.5 above is correct.
Halfway Between
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Halfway Between 81 and 847
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