When you ask "What number is halfway between 69 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=69 and Y=315.
To find the number halfway between 69 and 315, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 315 into our formula, we get:
(69 + 315)/2 = 192
Thus, the number halfway between 69 and 315 is 192.
To check that our answer is correct, we subtract 69 from 192 and subtract 192 from 315 and compare the two numbers:
192 - 69 = 123
315 - 192 = 123
As you can see, the halfway number is 123 higher than 69 and 123 lower than 315. Therefore, our halfway between answer of 192 above is correct.
Halfway Between
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Halfway Between 69 and 316
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