
When you ask "What number is halfway between 89 and 349?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=89 and Y=349.

To find the number halfway between 89 and 349, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 89 and 349 into our formula, we get:
(89 + 349)/2 = 219
Thus, the number halfway between 89 and 349 is 219.
To check that our answer is correct, we subtract 89 from 219 and subtract 219 from 349 and compare the two numbers:
219 - 89 = 130
349 - 219 = 130
As you can see, the halfway number is 130 higher than 89 and 130 lower than 349. Therefore, our halfway between answer of 219 above is correct.
Halfway Between
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Halfway Between 89 and 350
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