When you ask "What number is halfway between 46 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=46 and Y=489.
To find the number halfway between 46 and 489, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 46 and 489 into our formula, we get:
(46 + 489)/2 = 267.5
Thus, the number halfway between 46 and 489 is 267.5.
To check that our answer is correct, we subtract 46 from 267.5 and subtract 267.5 from 489 and compare the two numbers:
267.5 - 46 = 221.5
489 - 267.5 = 221.5
As you can see, the halfway number is 221.5 higher than 46 and 221.5 lower than 489. Therefore, our halfway between answer of 267.5 above is correct.
Halfway Between
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Halfway Between 46 and 490
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