Halfway Between 21 and 338

When you ask "What number is halfway between 21 and 338?" 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=338.

Halfway Between Line

To find the number halfway between 21 and 338, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 338 into our formula, we get:

(21 + 338)/2 = 179.5

Thus, the number halfway between 21 and 338 is 179.5.

To check that our answer is correct, we subtract 21 from 179.5 and subtract 179.5 from 338 and compare the two numbers:

179.5 - 21 = 158.5
338 - 179.5 = 158.5

As you can see, the halfway number is 158.5 higher than 21 and 158.5 lower than 338. Therefore, our halfway between answer of 179.5 above is correct.

Halfway Between
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Halfway Between 21 and 339
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