Halfway Between 40 and 509

When you ask "What number is halfway between 40 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=40 and Y=509.

Halfway Between Line

To find the number halfway between 40 and 509, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 40 and 509 into our formula, we get:

(40 + 509)/2 = 274.5

Thus, the number halfway between 40 and 509 is 274.5.

To check that our answer is correct, we subtract 40 from 274.5 and subtract 274.5 from 509 and compare the two numbers:

274.5 - 40 = 234.5
509 - 274.5 = 234.5

As you can see, the halfway number is 234.5 higher than 40 and 234.5 lower than 509. Therefore, our halfway between answer of 274.5 above is correct.

Halfway Between
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Halfway Between 40 and 510
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