Halfway Between 20 and 397

When you ask "What number is halfway between 20 and 397?" 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=397.

Halfway Between Line

To find the number halfway between 20 and 397, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 20 and 397 into our formula, we get:

(20 + 397)/2 = 208.5

Thus, the number halfway between 20 and 397 is 208.5.

To check that our answer is correct, we subtract 20 from 208.5 and subtract 208.5 from 397 and compare the two numbers:

208.5 - 20 = 188.5
397 - 208.5 = 188.5

As you can see, the halfway number is 188.5 higher than 20 and 188.5 lower than 397. Therefore, our halfway between answer of 208.5 above is correct.

Halfway Between
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Halfway Between 20 and 398
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