When you ask "What number is halfway between 75 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=75 and Y=489.
To find the number halfway between 75 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 489 into our formula, we get:
(75 + 489)/2 = 282
Thus, the number halfway between 75 and 489 is 282.
To check that our answer is correct, we subtract 75 from 282 and subtract 282 from 489 and compare the two numbers:
282 - 75 = 207
489 - 282 = 207
As you can see, the halfway number is 207 higher than 75 and 207 lower than 489. Therefore, our halfway between answer of 282 above is correct.
Halfway Between
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Halfway Between 75 and 490
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