When you ask "What number is halfway between 84 and 419?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=419.
To find the number halfway between 84 and 419, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 419 into our formula, we get:
(84 + 419)/2 = 251.5
Thus, the number halfway between 84 and 419 is 251.5.
To check that our answer is correct, we subtract 84 from 251.5 and subtract 251.5 from 419 and compare the two numbers:
251.5 - 84 = 167.5
419 - 251.5 = 167.5
As you can see, the halfway number is 167.5 higher than 84 and 167.5 lower than 419. Therefore, our halfway between answer of 251.5 above is correct.
Halfway Between
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Halfway Between 84 and 420
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