Halfway Between 15 and 690

When you ask "What number is halfway between 15 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=15 and Y=690.

Halfway Between Line

To find the number halfway between 15 and 690, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 690 into our formula, we get:

(15 + 690)/2 = 352.5

Thus, the number halfway between 15 and 690 is 352.5.

To check that our answer is correct, we subtract 15 from 352.5 and subtract 352.5 from 690 and compare the two numbers:

352.5 - 15 = 337.5
690 - 352.5 = 337.5

As you can see, the halfway number is 337.5 higher than 15 and 337.5 lower than 690. Therefore, our halfway between answer of 352.5 above is correct.

Halfway Between
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Halfway Between 15 and 691
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