When you ask "What number is halfway between 47 and 102?" 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=102.
To find the number halfway between 47 and 102, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 102 into our formula, we get:
(47 + 102)/2 = 74.5
Thus, the number halfway between 47 and 102 is 74.5.
To check that our answer is correct, we subtract 47 from 74.5 and subtract 74.5 from 102 and compare the two numbers:
74.5 - 47 = 27.5
102 - 74.5 = 27.5
As you can see, the halfway number is 27.5 higher than 47 and 27.5 lower than 102. Therefore, our halfway between answer of 74.5 above is correct.
Halfway Between
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Halfway Between 47 and 103
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