When you ask "What number is halfway between 57 and 702?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=702.
To find the number halfway between 57 and 702, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 702 into our formula, we get:
(57 + 702)/2 = 379.5
Thus, the number halfway between 57 and 702 is 379.5.
To check that our answer is correct, we subtract 57 from 379.5 and subtract 379.5 from 702 and compare the two numbers:
379.5 - 57 = 322.5
702 - 379.5 = 322.5
As you can see, the halfway number is 322.5 higher than 57 and 322.5 lower than 702. Therefore, our halfway between answer of 379.5 above is correct.
Halfway Between
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