When you ask "What number is halfway between 82 and 312?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=82 and Y=312.
To find the number halfway between 82 and 312, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 312 into our formula, we get:
(82 + 312)/2 = 197
Thus, the number halfway between 82 and 312 is 197.
To check that our answer is correct, we subtract 82 from 197 and subtract 197 from 312 and compare the two numbers:
197 - 82 = 115
312 - 197 = 115
As you can see, the halfway number is 115 higher than 82 and 115 lower than 312. Therefore, our halfway between answer of 197 above is correct.
Halfway Between
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