Halfway Between 100 and 422

When you ask "What number is halfway between 100 and 422?" 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=422.

Halfway Between Line

To find the number halfway between 100 and 422, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 422 into our formula, we get:

(100 + 422)/2 = 261

Thus, the number halfway between 100 and 422 is 261.

To check that our answer is correct, we subtract 100 from 261 and subtract 261 from 422 and compare the two numbers:

261 - 100 = 161
422 - 261 = 161

As you can see, the halfway number is 161 higher than 100 and 161 lower than 422. Therefore, our halfway between answer of 261 above is correct.

Halfway Between
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Halfway Between 100 and 423
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