When you ask "What number is halfway between 47 and 218?" 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=218.
To find the number halfway between 47 and 218, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 218 into our formula, we get:
(47 + 218)/2 = 132.5
Thus, the number halfway between 47 and 218 is 132.5.
To check that our answer is correct, we subtract 47 from 132.5 and subtract 132.5 from 218 and compare the two numbers:
132.5 - 47 = 85.5
218 - 132.5 = 85.5
As you can see, the halfway number is 85.5 higher than 47 and 85.5 lower than 218. Therefore, our halfway between answer of 132.5 above is correct.
Halfway Between
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Halfway Between 47 and 219
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