Halfway Between 21 and 609

When you ask "What number is halfway between 21 and 609?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=609.

Halfway Between Line

To find the number halfway between 21 and 609, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 609 into our formula, we get:

(21 + 609)/2 = 315

Thus, the number halfway between 21 and 609 is 315.

To check that our answer is correct, we subtract 21 from 315 and subtract 315 from 609 and compare the two numbers:

315 - 21 = 294
609 - 315 = 294

As you can see, the halfway number is 294 higher than 21 and 294 lower than 609. Therefore, our halfway between answer of 315 above is correct.

Halfway Between
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Halfway Between 21 and 610
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