Halfway Between 100 and 770

When you ask "What number is halfway between 100 and 770?" 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=770.

Halfway Between Line

To find the number halfway between 100 and 770, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 770 into our formula, we get:

(100 + 770)/2 = 435

Thus, the number halfway between 100 and 770 is 435.

To check that our answer is correct, we subtract 100 from 435 and subtract 435 from 770 and compare the two numbers:

435 - 100 = 335
770 - 435 = 335

As you can see, the halfway number is 335 higher than 100 and 335 lower than 770. Therefore, our halfway between answer of 435 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 771
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