When you ask "What number is halfway between 36 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=36 and Y=489.
To find the number halfway between 36 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 36 and 489 into our formula, we get:
(36 + 489)/2 = 262.5
Thus, the number halfway between 36 and 489 is 262.5.
To check that our answer is correct, we subtract 36 from 262.5 and subtract 262.5 from 489 and compare the two numbers:
262.5 - 36 = 226.5
489 - 262.5 = 226.5
As you can see, the halfway number is 226.5 higher than 36 and 226.5 lower than 489. Therefore, our halfway between answer of 262.5 above is correct.
Halfway Between
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Halfway Between 36 and 490
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