When you ask "What number is halfway between 47 and 210?" 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=210.
To find the number halfway between 47 and 210, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 210 into our formula, we get:
(47 + 210)/2 = 128.5
Thus, the number halfway between 47 and 210 is 128.5.
To check that our answer is correct, we subtract 47 from 128.5 and subtract 128.5 from 210 and compare the two numbers:
128.5 - 47 = 81.5
210 - 128.5 = 81.5
As you can see, the halfway number is 81.5 higher than 47 and 81.5 lower than 210. Therefore, our halfway between answer of 128.5 above is correct.
Halfway Between
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Halfway Between 47 and 211
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