Halfway Between 11 and 689

When you ask "What number is halfway between 11 and 689?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=11 and Y=689.

Halfway Between Line

To find the number halfway between 11 and 689, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 11 and 689 into our formula, we get:

(11 + 689)/2 = 350

Thus, the number halfway between 11 and 689 is 350.

To check that our answer is correct, we subtract 11 from 350 and subtract 350 from 689 and compare the two numbers:

350 - 11 = 339
689 - 350 = 339

As you can see, the halfway number is 339 higher than 11 and 339 lower than 689. Therefore, our halfway between answer of 350 above is correct.

Halfway Between
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Halfway Between 11 and 690
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