Halfway Between 100 and 550

When you ask "What number is halfway between 100 and 550?" 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=550.

Halfway Between Line

To find the number halfway between 100 and 550, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 550 into our formula, we get:

(100 + 550)/2 = 325

Thus, the number halfway between 100 and 550 is 325.

To check that our answer is correct, we subtract 100 from 325 and subtract 325 from 550 and compare the two numbers:

325 - 100 = 225
550 - 325 = 225

As you can see, the halfway number is 225 higher than 100 and 225 lower than 550. Therefore, our halfway between answer of 325 above is correct.

Halfway Between
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Halfway Between 100 and 551
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