Halfway Between 20 and 400

When you ask "What number is halfway between 20 and 400?" 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=400.

Halfway Between Line

To find the number halfway between 20 and 400, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 400 into our formula, we get:

(20 + 400)/2 = 210

Thus, the number halfway between 20 and 400 is 210.

To check that our answer is correct, we subtract 20 from 210 and subtract 210 from 400 and compare the two numbers:

210 - 20 = 190
400 - 210 = 190

As you can see, the halfway number is 190 higher than 20 and 190 lower than 400. Therefore, our halfway between answer of 210 above is correct.

Halfway Between
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Halfway Between 20 and 401
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