When you ask "What number is halfway between 49 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=49 and Y=312.
To find the number halfway between 49 and 312, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 312 into our formula, we get:
(49 + 312)/2 = 180.5
Thus, the number halfway between 49 and 312 is 180.5.
To check that our answer is correct, we subtract 49 from 180.5 and subtract 180.5 from 312 and compare the two numbers:
180.5 - 49 = 131.5
312 - 180.5 = 131.5
As you can see, the halfway number is 131.5 higher than 49 and 131.5 lower than 312. Therefore, our halfway between answer of 180.5 above is correct.
Halfway Between
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