When you ask "What number is halfway between 21 and 334?" 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=334.
To find the number halfway between 21 and 334, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 334 into our formula, we get:
(21 + 334)/2 = 177.5
Thus, the number halfway between 21 and 334 is 177.5.
To check that our answer is correct, we subtract 21 from 177.5 and subtract 177.5 from 334 and compare the two numbers:
177.5 - 21 = 156.5
334 - 177.5 = 156.5
As you can see, the halfway number is 156.5 higher than 21 and 156.5 lower than 334. Therefore, our halfway between answer of 177.5 above is correct.
Halfway Between
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Halfway Between 21 and 335
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