Halfway Between 100 and 625

When you ask "What number is halfway between 100 and 625?" 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=625.

Halfway Between Line

To find the number halfway between 100 and 625, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 625 into our formula, we get:

(100 + 625)/2 = 362.5

Thus, the number halfway between 100 and 625 is 362.5.

To check that our answer is correct, we subtract 100 from 362.5 and subtract 362.5 from 625 and compare the two numbers:

362.5 - 100 = 262.5
625 - 362.5 = 262.5

As you can see, the halfway number is 262.5 higher than 100 and 262.5 lower than 625. Therefore, our halfway between answer of 362.5 above is correct.

Halfway Between
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Halfway Between 100 and 626
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