When you ask "What number is halfway between 47 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=47 and Y=489.
To find the number halfway between 47 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 489 into our formula, we get:
(47 + 489)/2 = 268
Thus, the number halfway between 47 and 489 is 268.
To check that our answer is correct, we subtract 47 from 268 and subtract 268 from 489 and compare the two numbers:
268 - 47 = 221
489 - 268 = 221
As you can see, the halfway number is 221 higher than 47 and 221 lower than 489. Therefore, our halfway between answer of 268 above is correct.
Halfway Between
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Halfway Between 47 and 490
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