
When you ask "What number is halfway between 67 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=67 and Y=312.

To find the number halfway between 67 and 312, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 67 and 312 into our formula, we get:
(67 + 312)/2 = 189.5
Thus, the number halfway between 67 and 312 is 189.5.
To check that our answer is correct, we subtract 67 from 189.5 and subtract 189.5 from 312 and compare the two numbers:
189.5 - 67 = 122.5
312 - 189.5 = 122.5
As you can see, the halfway number is 122.5 higher than 67 and 122.5 lower than 312. Therefore, our halfway between answer of 189.5 above is correct.
Halfway Between
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