Halfway Between 100 and 503

When you ask "What number is halfway between 100 and 503?" 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=503.

Halfway Between Line

To find the number halfway between 100 and 503, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 503 into our formula, we get:

(100 + 503)/2 = 301.5

Thus, the number halfway between 100 and 503 is 301.5.

To check that our answer is correct, we subtract 100 from 301.5 and subtract 301.5 from 503 and compare the two numbers:

301.5 - 100 = 201.5
503 - 301.5 = 201.5

As you can see, the halfway number is 201.5 higher than 100 and 201.5 lower than 503. Therefore, our halfway between answer of 301.5 above is correct.

Halfway Between
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Halfway Between 100 and 504
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