Halfway Between 100 and 669

When you ask "What number is halfway between 100 and 669?" 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=669.

Halfway Between Line

To find the number halfway between 100 and 669, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 669 into our formula, we get:

(100 + 669)/2 = 384.5

Thus, the number halfway between 100 and 669 is 384.5.

To check that our answer is correct, we subtract 100 from 384.5 and subtract 384.5 from 669 and compare the two numbers:

384.5 - 100 = 284.5
669 - 384.5 = 284.5

As you can see, the halfway number is 284.5 higher than 100 and 284.5 lower than 669. Therefore, our halfway between answer of 384.5 above is correct.

Halfway Between
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Halfway Between 100 and 670
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