Halfway Between 21 and 742

When you ask "What number is halfway between 21 and 742?" 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=742.

Halfway Between Line

To find the number halfway between 21 and 742, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 742 into our formula, we get:

(21 + 742)/2 = 381.5

Thus, the number halfway between 21 and 742 is 381.5.

To check that our answer is correct, we subtract 21 from 381.5 and subtract 381.5 from 742 and compare the two numbers:

381.5 - 21 = 360.5
742 - 381.5 = 360.5

As you can see, the halfway number is 360.5 higher than 21 and 360.5 lower than 742. Therefore, our halfway between answer of 381.5 above is correct.

Halfway Between
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Halfway Between 21 and 743
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