Halfway Between 100 and 662

When you ask "What number is halfway between 100 and 662?" 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=662.

Halfway Between Line

To find the number halfway between 100 and 662, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 662 into our formula, we get:

(100 + 662)/2 = 381

Thus, the number halfway between 100 and 662 is 381.

To check that our answer is correct, we subtract 100 from 381 and subtract 381 from 662 and compare the two numbers:

381 - 100 = 281
662 - 381 = 281

As you can see, the halfway number is 281 higher than 100 and 281 lower than 662. Therefore, our halfway between answer of 381 above is correct.

Halfway Between
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Halfway Between 100 and 663
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