When you ask "What number is halfway between 98 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=98 and Y=489.
To find the number halfway between 98 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 98 and 489 into our formula, we get:
(98 + 489)/2 = 293.5
Thus, the number halfway between 98 and 489 is 293.5.
To check that our answer is correct, we subtract 98 from 293.5 and subtract 293.5 from 489 and compare the two numbers:
293.5 - 98 = 195.5
489 - 293.5 = 195.5
As you can see, the halfway number is 195.5 higher than 98 and 195.5 lower than 489. Therefore, our halfway between answer of 293.5 above is correct.
Halfway Between
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Halfway Between 98 and 490
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