Halfway Between 43 and 509

When you ask "What number is halfway between 43 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=43 and Y=509.

Halfway Between Line

To find the number halfway between 43 and 509, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 43 and 509 into our formula, we get:

(43 + 509)/2 = 276

Thus, the number halfway between 43 and 509 is 276.

To check that our answer is correct, we subtract 43 from 276 and subtract 276 from 509 and compare the two numbers:

276 - 43 = 233
509 - 276 = 233

As you can see, the halfway number is 233 higher than 43 and 233 lower than 509. Therefore, our halfway between answer of 276 above is correct.

Halfway Between
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Halfway Between 43 and 510
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