When you ask "What number is halfway between 21 and 466?" 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=466.
To find the number halfway between 21 and 466, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 466 into our formula, we get:
(21 + 466)/2 = 243.5
Thus, the number halfway between 21 and 466 is 243.5.
To check that our answer is correct, we subtract 21 from 243.5 and subtract 243.5 from 466 and compare the two numbers:
243.5 - 21 = 222.5
466 - 243.5 = 222.5
As you can see, the halfway number is 222.5 higher than 21 and 222.5 lower than 466. Therefore, our halfway between answer of 243.5 above is correct.
Halfway Between
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Halfway Between 21 and 467
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