Halfway Between 15 and 629

When you ask "What number is halfway between 15 and 629?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=629.

Halfway Between Line

To find the number halfway between 15 and 629, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 629 into our formula, we get:

(15 + 629)/2 = 322

Thus, the number halfway between 15 and 629 is 322.

To check that our answer is correct, we subtract 15 from 322 and subtract 322 from 629 and compare the two numbers:

322 - 15 = 307
629 - 322 = 307

As you can see, the halfway number is 307 higher than 15 and 307 lower than 629. Therefore, our halfway between answer of 322 above is correct.

Halfway Between
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