When you ask "What number is halfway between 34 and 489?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=34 and Y=489.
To find the number halfway between 34 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 34 and 489 into our formula, we get:
(34 + 489)/2 = 261.5
Thus, the number halfway between 34 and 489 is 261.5.
To check that our answer is correct, we subtract 34 from 261.5 and subtract 261.5 from 489 and compare the two numbers:
261.5 - 34 = 227.5
489 - 261.5 = 227.5
As you can see, the halfway number is 227.5 higher than 34 and 227.5 lower than 489. Therefore, our halfway between answer of 261.5 above is correct.
Halfway Between
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Halfway Between 34 and 490
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