Halfway Between 21 and 329

When you ask "What number is halfway between 21 and 329?" 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=329.

Halfway Between Line

To find the number halfway between 21 and 329, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 329 into our formula, we get:

(21 + 329)/2 = 175

Thus, the number halfway between 21 and 329 is 175.

To check that our answer is correct, we subtract 21 from 175 and subtract 175 from 329 and compare the two numbers:

175 - 21 = 154
329 - 175 = 154

As you can see, the halfway number is 154 higher than 21 and 154 lower than 329. Therefore, our halfway between answer of 175 above is correct.

Halfway Between
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Halfway Between 21 and 330
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