When you ask "What number is halfway between 47 and 117?" 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=117.
To find the number halfway between 47 and 117, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 117 into our formula, we get:
(47 + 117)/2 = 82
Thus, the number halfway between 47 and 117 is 82.
To check that our answer is correct, we subtract 47 from 82 and subtract 82 from 117 and compare the two numbers:
82 - 47 = 35
117 - 82 = 35
As you can see, the halfway number is 35 higher than 47 and 35 lower than 117. Therefore, our halfway between answer of 82 above is correct.
Halfway Between
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Halfway Between 47 and 118
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