When you ask "What number is halfway between 47 and 212?" 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=212.
To find the number halfway between 47 and 212, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 212 into our formula, we get:
(47 + 212)/2 = 129.5
Thus, the number halfway between 47 and 212 is 129.5.
To check that our answer is correct, we subtract 47 from 129.5 and subtract 129.5 from 212 and compare the two numbers:
129.5 - 47 = 82.5
212 - 129.5 = 82.5
As you can see, the halfway number is 82.5 higher than 47 and 82.5 lower than 212. Therefore, our halfway between answer of 129.5 above is correct.
Halfway Between
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Halfway Between 47 and 213
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