When you ask "What number is halfway between 69 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=69 and Y=288.
To find the number halfway between 69 and 288, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 288 into our formula, we get:
(69 + 288)/2 = 178.5
Thus, the number halfway between 69 and 288 is 178.5.
To check that our answer is correct, we subtract 69 from 178.5 and subtract 178.5 from 288 and compare the two numbers:
178.5 - 69 = 109.5
288 - 178.5 = 109.5
As you can see, the halfway number is 109.5 higher than 69 and 109.5 lower than 288. Therefore, our halfway between answer of 178.5 above is correct.
Halfway Between
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Halfway Between 69 and 289
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