When you ask "What number is halfway between 55 and 634?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=55 and Y=634.
To find the number halfway between 55 and 634, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 634 into our formula, we get:
(55 + 634)/2 = 344.5
Thus, the number halfway between 55 and 634 is 344.5.
To check that our answer is correct, we subtract 55 from 344.5 and subtract 344.5 from 634 and compare the two numbers:
344.5 - 55 = 289.5
634 - 344.5 = 289.5
As you can see, the halfway number is 289.5 higher than 55 and 289.5 lower than 634. Therefore, our halfway between answer of 344.5 above is correct.
Halfway Between
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Halfway Between 55 and 635
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