Halfway Between 21 and 679

When you ask "What number is halfway between 21 and 679?" 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=679.

Halfway Between Line

To find the number halfway between 21 and 679, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 679 into our formula, we get:

(21 + 679)/2 = 350

Thus, the number halfway between 21 and 679 is 350.

To check that our answer is correct, we subtract 21 from 350 and subtract 350 from 679 and compare the two numbers:

350 - 21 = 329
679 - 350 = 329

As you can see, the halfway number is 329 higher than 21 and 329 lower than 679. Therefore, our halfway between answer of 350 above is correct.

Halfway Between
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Halfway Between 21 and 680
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