Halfway Between 15 and 428

When you ask "What number is halfway between 15 and 428?" 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=428.

Halfway Between Line

To find the number halfway between 15 and 428, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 428 into our formula, we get:

(15 + 428)/2 = 221.5

Thus, the number halfway between 15 and 428 is 221.5.

To check that our answer is correct, we subtract 15 from 221.5 and subtract 221.5 from 428 and compare the two numbers:

221.5 - 15 = 206.5
428 - 221.5 = 206.5

As you can see, the halfway number is 206.5 higher than 15 and 206.5 lower than 428. Therefore, our halfway between answer of 221.5 above is correct.

Halfway Between
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Halfway Between 15 and 429
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