Halfway Between 20 and 510

When you ask "What number is halfway between 20 and 510?" 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=510.

Halfway Between Line

To find the number halfway between 20 and 510, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 510 into our formula, we get:

(20 + 510)/2 = 265

Thus, the number halfway between 20 and 510 is 265.

To check that our answer is correct, we subtract 20 from 265 and subtract 265 from 510 and compare the two numbers:

265 - 20 = 245
510 - 265 = 245

As you can see, the halfway number is 245 higher than 20 and 245 lower than 510. Therefore, our halfway between answer of 265 above is correct.

Halfway Between
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Halfway Between 20 and 511
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