Halfway Between 20 and 505

When you ask "What number is halfway between 20 and 505?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=505.

Halfway Between Line

To find the number halfway between 20 and 505, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 505 into our formula, we get:

(20 + 505)/2 = 262.5

Thus, the number halfway between 20 and 505 is 262.5.

To check that our answer is correct, we subtract 20 from 262.5 and subtract 262.5 from 505 and compare the two numbers:

262.5 - 20 = 242.5
505 - 262.5 = 242.5

As you can see, the halfway number is 242.5 higher than 20 and 242.5 lower than 505. Therefore, our halfway between answer of 262.5 above is correct.

Halfway Between
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Halfway Between 20 and 506
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