When you ask "What number is halfway between 69 and 108?" 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=108.
To find the number halfway between 69 and 108, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 108 into our formula, we get:
(69 + 108)/2 = 88.5
Thus, the number halfway between 69 and 108 is 88.5.
To check that our answer is correct, we subtract 69 from 88.5 and subtract 88.5 from 108 and compare the two numbers:
88.5 - 69 = 19.5
108 - 88.5 = 19.5
As you can see, the halfway number is 19.5 higher than 69 and 19.5 lower than 108. Therefore, our halfway between answer of 88.5 above is correct.
Halfway Between
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Halfway Between 69 and 109
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