Halfway Between 100 and 200

When you ask "What number is halfway between 100 and 200?" 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=200.

Halfway Between Line

To find the number halfway between 100 and 200, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 200 into our formula, we get:

(100 + 200)/2 = 150

Thus, the number halfway between 100 and 200 is 150.

To check that our answer is correct, we subtract 100 from 150 and subtract 150 from 200 and compare the two numbers:

150 - 100 = 50
200 - 150 = 50

As you can see, the halfway number is 50 higher than 100 and 50 lower than 200. Therefore, our halfway between answer of 150 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 201
Here is our next Halfway Between calculation.