Halfway Between 13 and 690

When you ask "What number is halfway between 13 and 690?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=13 and Y=690.

Halfway Between Line

To find the number halfway between 13 and 690, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 13 and 690 into our formula, we get:

(13 + 690)/2 = 351.5

Thus, the number halfway between 13 and 690 is 351.5.

To check that our answer is correct, we subtract 13 from 351.5 and subtract 351.5 from 690 and compare the two numbers:

351.5 - 13 = 338.5
690 - 351.5 = 338.5

As you can see, the halfway number is 338.5 higher than 13 and 338.5 lower than 690. Therefore, our halfway between answer of 351.5 above is correct.

Halfway Between
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Halfway Between 13 and 691
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