Halfway Between 72 and 509

When you ask "What number is halfway between 72 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=72 and Y=509.

Halfway Between Line

To find the number halfway between 72 and 509, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 72 and 509 into our formula, we get:

(72 + 509)/2 = 290.5

Thus, the number halfway between 72 and 509 is 290.5.

To check that our answer is correct, we subtract 72 from 290.5 and subtract 290.5 from 509 and compare the two numbers:

290.5 - 72 = 218.5
509 - 290.5 = 218.5

As you can see, the halfway number is 218.5 higher than 72 and 218.5 lower than 509. Therefore, our halfway between answer of 290.5 above is correct.

Halfway Between
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Halfway Between 72 and 510
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