
When you ask "What number is halfway between 81 and 761?" 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=761.

To find the number halfway between 81 and 761, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 761 into our formula, we get:
(81 + 761)/2 = 421
Thus, the number halfway between 81 and 761 is 421.
To check that our answer is correct, we subtract 81 from 421 and subtract 421 from 761 and compare the two numbers:
421 - 81 = 340
761 - 421 = 340
As you can see, the halfway number is 340 higher than 81 and 340 lower than 761. Therefore, our halfway between answer of 421 above is correct.
Halfway Between
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