Halfway Between 15 and 259

When you ask "What number is halfway between 15 and 259?" 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=259.

Halfway Between Line

To find the number halfway between 15 and 259, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 259 into our formula, we get:

(15 + 259)/2 = 137

Thus, the number halfway between 15 and 259 is 137.

To check that our answer is correct, we subtract 15 from 137 and subtract 137 from 259 and compare the two numbers:

137 - 15 = 122
259 - 137 = 122

As you can see, the halfway number is 122 higher than 15 and 122 lower than 259. Therefore, our halfway between answer of 137 above is correct.

Halfway Between
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Halfway Between 15 and 260
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