When you ask "What number is halfway between 97 and 315?" 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=315.
To find the number halfway between 97 and 315, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 97 and 315 into our formula, we get:
(97 + 315)/2 = 206
Thus, the number halfway between 97 and 315 is 206.
To check that our answer is correct, we subtract 97 from 206 and subtract 206 from 315 and compare the two numbers:
206 - 97 = 109
315 - 206 = 109
As you can see, the halfway number is 109 higher than 97 and 109 lower than 315. Therefore, our halfway between answer of 206 above is correct.
Halfway Between
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Halfway Between 97 and 316
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