When you ask "What number is halfway between 64 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=64 and Y=315.
To find the number halfway between 64 and 315, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 315 into our formula, we get:
(64 + 315)/2 = 189.5
Thus, the number halfway between 64 and 315 is 189.5.
To check that our answer is correct, we subtract 64 from 189.5 and subtract 189.5 from 315 and compare the two numbers:
189.5 - 64 = 125.5
315 - 189.5 = 125.5
As you can see, the halfway number is 125.5 higher than 64 and 125.5 lower than 315. Therefore, our halfway between answer of 189.5 above is correct.
Halfway Between
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Halfway Between 64 and 316
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