When you ask "What number is halfway between 25 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=25 and Y=316.
To find the number halfway between 25 and 316, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 316 into our formula, we get:
(25 + 316)/2 = 170.5
Thus, the number halfway between 25 and 316 is 170.5.
To check that our answer is correct, we subtract 25 from 170.5 and subtract 170.5 from 316 and compare the two numbers:
170.5 - 25 = 145.5
316 - 170.5 = 145.5
As you can see, the halfway number is 145.5 higher than 25 and 145.5 lower than 316. Therefore, our halfway between answer of 170.5 above is correct.
Halfway Between
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Halfway Between 25 and 317
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