When you ask "What number is halfway between 8 and 69?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=69.
To find the number halfway between 8 and 69, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 69 into our formula, we get:
(8 + 69)/2 = 38.5
Thus, the number halfway between 8 and 69 is 38.5.
To check that our answer is correct, we subtract 8 from 38.5 and subtract 38.5 from 69 and compare the two numbers:
38.5 - 8 = 30.5
69 - 38.5 = 30.5
As you can see, the halfway number is 30.5 higher than 8 and 30.5 lower than 69. Therefore, our halfway between answer of 38.5 above is correct.
Halfway Between
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Halfway Between 8 and 70
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