When you ask "What number is halfway between 69 and 684?" 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=684.
To find the number halfway between 69 and 684, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 684 into our formula, we get:
(69 + 684)/2 = 376.5
Thus, the number halfway between 69 and 684 is 376.5.
To check that our answer is correct, we subtract 69 from 376.5 and subtract 376.5 from 684 and compare the two numbers:
376.5 - 69 = 307.5
684 - 376.5 = 307.5
As you can see, the halfway number is 307.5 higher than 69 and 307.5 lower than 684. Therefore, our halfway between answer of 376.5 above is correct.
Halfway Between
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Halfway Between 69 and 685
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