When you ask "What number is halfway between 97 and 520?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=97 and Y=520.
To find the number halfway between 97 and 520, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 97 and 520 into our formula, we get:
(97 + 520)/2 = 308.5
Thus, the number halfway between 97 and 520 is 308.5.
To check that our answer is correct, we subtract 97 from 308.5 and subtract 308.5 from 520 and compare the two numbers:
308.5 - 97 = 211.5
520 - 308.5 = 211.5
As you can see, the halfway number is 211.5 higher than 97 and 211.5 lower than 520. Therefore, our halfway between answer of 308.5 above is correct.
Halfway Between
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Halfway Between 97 and 521
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