When you ask "What number is halfway between 77 and 316?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=77 and Y=316.
To find the number halfway between 77 and 316, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 316 into our formula, we get:
(77 + 316)/2 = 196.5
Thus, the number halfway between 77 and 316 is 196.5.
To check that our answer is correct, we subtract 77 from 196.5 and subtract 196.5 from 316 and compare the two numbers:
196.5 - 77 = 119.5
316 - 196.5 = 119.5
As you can see, the halfway number is 119.5 higher than 77 and 119.5 lower than 316. Therefore, our halfway between answer of 196.5 above is correct.
Halfway Between
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Halfway Between 77 and 317
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