When you ask "What number is halfway between 29 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=29 and Y=489.
To find the number halfway between 29 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 489 into our formula, we get:
(29 + 489)/2 = 259
Thus, the number halfway between 29 and 489 is 259.
To check that our answer is correct, we subtract 29 from 259 and subtract 259 from 489 and compare the two numbers:
259 - 29 = 230
489 - 259 = 230
As you can see, the halfway number is 230 higher than 29 and 230 lower than 489. Therefore, our halfway between answer of 259 above is correct.
Halfway Between
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