Halfway Between 20 and 421

When you ask "What number is halfway between 20 and 421?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=421.

Halfway Between Line

To find the number halfway between 20 and 421, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 421 into our formula, we get:

(20 + 421)/2 = 220.5

Thus, the number halfway between 20 and 421 is 220.5.

To check that our answer is correct, we subtract 20 from 220.5 and subtract 220.5 from 421 and compare the two numbers:

220.5 - 20 = 200.5
421 - 220.5 = 200.5

As you can see, the halfway number is 200.5 higher than 20 and 200.5 lower than 421. Therefore, our halfway between answer of 220.5 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 20 and 422
Here is our next Halfway Between calculation.