When you ask "What number is halfway between 74 and 515?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=74 and Y=515.
To find the number halfway between 74 and 515, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 515 into our formula, we get:
(74 + 515)/2 = 294.5
Thus, the number halfway between 74 and 515 is 294.5.
To check that our answer is correct, we subtract 74 from 294.5 and subtract 294.5 from 515 and compare the two numbers:
294.5 - 74 = 220.5
515 - 294.5 = 220.5
As you can see, the halfway number is 220.5 higher than 74 and 220.5 lower than 515. Therefore, our halfway between answer of 294.5 above is correct.
Halfway Between
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Halfway Between 74 and 516
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