Halfway Between 21 and 721

When you ask "What number is halfway between 21 and 721?" 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=721.

Halfway Between Line

To find the number halfway between 21 and 721, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 721 into our formula, we get:

(21 + 721)/2 = 371

Thus, the number halfway between 21 and 721 is 371.

To check that our answer is correct, we subtract 21 from 371 and subtract 371 from 721 and compare the two numbers:

371 - 21 = 350
721 - 371 = 350

As you can see, the halfway number is 350 higher than 21 and 350 lower than 721. Therefore, our halfway between answer of 371 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 21 and 722
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