When you ask "What number is halfway between 81 and 352?" 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=352.
To find the number halfway between 81 and 352, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 352 into our formula, we get:
(81 + 352)/2 = 216.5
Thus, the number halfway between 81 and 352 is 216.5.
To check that our answer is correct, we subtract 81 from 216.5 and subtract 216.5 from 352 and compare the two numbers:
216.5 - 81 = 135.5
352 - 216.5 = 135.5
As you can see, the halfway number is 135.5 higher than 81 and 135.5 lower than 352. Therefore, our halfway between answer of 216.5 above is correct.
Halfway Between
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Halfway Between 81 and 353
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