When you ask "What number is halfway between 21 and 950?" 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=950.
To find the number halfway between 21 and 950, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 950 into our formula, we get:
(21 + 950)/2 = 485.5
Thus, the number halfway between 21 and 950 is 485.5.
To check that our answer is correct, we subtract 21 from 485.5 and subtract 485.5 from 950 and compare the two numbers:
485.5 - 21 = 464.5
950 - 485.5 = 464.5
As you can see, the halfway number is 464.5 higher than 21 and 464.5 lower than 950. Therefore, our halfway between answer of 485.5 above is correct.
Halfway Between
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Halfway Between 21 and 951
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