When you ask "What number is halfway between 47 and 420?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=47 and Y=420.
To find the number halfway between 47 and 420, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 420 into our formula, we get:
(47 + 420)/2 = 233.5
Thus, the number halfway between 47 and 420 is 233.5.
To check that our answer is correct, we subtract 47 from 233.5 and subtract 233.5 from 420 and compare the two numbers:
233.5 - 47 = 186.5
420 - 233.5 = 186.5
As you can see, the halfway number is 186.5 higher than 47 and 186.5 lower than 420. Therefore, our halfway between answer of 233.5 above is correct.
Halfway Between
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Halfway Between 47 and 421
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