Halfway Between 85 and 685

When you ask "What number is halfway between 85 and 685?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=685.

Halfway Between Line

To find the number halfway between 85 and 685, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 85 and 685 into our formula, we get:

(85 + 685)/2 = 385

Thus, the number halfway between 85 and 685 is 385.

To check that our answer is correct, we subtract 85 from 385 and subtract 385 from 685 and compare the two numbers:

385 - 85 = 300
685 - 385 = 300

As you can see, the halfway number is 300 higher than 85 and 300 lower than 685. Therefore, our halfway between answer of 385 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 85 and 686
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