When you ask "What number is halfway between 23 and 288?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=23 and Y=288.
To find the number halfway between 23 and 288, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 288 into our formula, we get:
(23 + 288)/2 = 155.5
Thus, the number halfway between 23 and 288 is 155.5.
To check that our answer is correct, we subtract 23 from 155.5 and subtract 155.5 from 288 and compare the two numbers:
155.5 - 23 = 132.5
288 - 155.5 = 132.5
As you can see, the halfway number is 132.5 higher than 23 and 132.5 lower than 288. Therefore, our halfway between answer of 155.5 above is correct.
Halfway Between
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Halfway Between 23 and 289
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