Halfway Between 25 and 643

When you ask "What number is halfway between 25 and 643?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=25 and Y=643.

Halfway Between Line

To find the number halfway between 25 and 643, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 25 and 643 into our formula, we get:

(25 + 643)/2 = 334

Thus, the number halfway between 25 and 643 is 334.

To check that our answer is correct, we subtract 25 from 334 and subtract 334 from 643 and compare the two numbers:

334 - 25 = 309
643 - 334 = 309

As you can see, the halfway number is 309 higher than 25 and 309 lower than 643. Therefore, our halfway between answer of 334 above is correct.

Halfway Between
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Halfway Between 25 and 644
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