Halfway Between 31 and 278

When you ask "What number is halfway between 31 and 278?" 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=278.

Halfway Between Line

To find the number halfway between 31 and 278, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 31 and 278 into our formula, we get:

(31 + 278)/2 = 154.5

Thus, the number halfway between 31 and 278 is 154.5.

To check that our answer is correct, we subtract 31 from 154.5 and subtract 154.5 from 278 and compare the two numbers:

154.5 - 31 = 123.5
278 - 154.5 = 123.5

As you can see, the halfway number is 123.5 higher than 31 and 123.5 lower than 278. Therefore, our halfway between answer of 154.5 above is correct.

Halfway Between
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Halfway Between 31 and 279
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