Halfway Between 85 and 509

When you ask "What number is halfway between 85 and 509?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=509.

Halfway Between Line

To find the number halfway between 85 and 509, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 85 and 509 into our formula, we get:

(85 + 509)/2 = 297

Thus, the number halfway between 85 and 509 is 297.

To check that our answer is correct, we subtract 85 from 297 and subtract 297 from 509 and compare the two numbers:

297 - 85 = 212
509 - 297 = 212

As you can see, the halfway number is 212 higher than 85 and 212 lower than 509. Therefore, our halfway between answer of 297 above is correct.

Halfway Between
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Halfway Between 85 and 510
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