Halfway Between 100 and 690

When you ask "What number is halfway between 100 and 690?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=100 and Y=690.

Halfway Between Line

To find the number halfway between 100 and 690, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 690 into our formula, we get:

(100 + 690)/2 = 395

Thus, the number halfway between 100 and 690 is 395.

To check that our answer is correct, we subtract 100 from 395 and subtract 395 from 690 and compare the two numbers:

395 - 100 = 295
690 - 395 = 295

As you can see, the halfway number is 295 higher than 100 and 295 lower than 690. Therefore, our halfway between answer of 395 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 691
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