When you ask "What number is halfway between 31 and 350?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=31 and Y=350.
To find the number halfway between 31 and 350, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 350 into our formula, we get:
(31 + 350)/2 = 190.5
Thus, the number halfway between 31 and 350 is 190.5.
To check that our answer is correct, we subtract 31 from 190.5 and subtract 190.5 from 350 and compare the two numbers:
190.5 - 31 = 159.5
350 - 190.5 = 159.5
As you can see, the halfway number is 159.5 higher than 31 and 159.5 lower than 350. Therefore, our halfway between answer of 190.5 above is correct.
Halfway Between
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Halfway Between 31 and 351
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