When you ask "What number is halfway between 69 and 408?" 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=408.
To find the number halfway between 69 and 408, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 408 into our formula, we get:
(69 + 408)/2 = 238.5
Thus, the number halfway between 69 and 408 is 238.5.
To check that our answer is correct, we subtract 69 from 238.5 and subtract 238.5 from 408 and compare the two numbers:
238.5 - 69 = 169.5
408 - 238.5 = 169.5
As you can see, the halfway number is 169.5 higher than 69 and 169.5 lower than 408. Therefore, our halfway between answer of 238.5 above is correct.
Halfway Between
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Halfway Between 69 and 409
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