When you ask "What number is halfway between 55 and 409?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=55 and Y=409.
To find the number halfway between 55 and 409, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 409 into our formula, we get:
(55 + 409)/2 = 232
Thus, the number halfway between 55 and 409 is 232.
To check that our answer is correct, we subtract 55 from 232 and subtract 232 from 409 and compare the two numbers:
232 - 55 = 177
409 - 232 = 177
As you can see, the halfway number is 177 higher than 55 and 177 lower than 409. Therefore, our halfway between answer of 232 above is correct.
Halfway Between
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Halfway Between 55 and 410
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