When you ask "What number is halfway between 21 and 575?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=575.
To find the number halfway between 21 and 575, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 575 into our formula, we get:
(21 + 575)/2 = 298
Thus, the number halfway between 21 and 575 is 298.
To check that our answer is correct, we subtract 21 from 298 and subtract 298 from 575 and compare the two numbers:
298 - 21 = 277
575 - 298 = 277
As you can see, the halfway number is 277 higher than 21 and 277 lower than 575. Therefore, our halfway between answer of 298 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 21 and 576
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