When you ask "What number is halfway between 47 and 123?" 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=123.
To find the number halfway between 47 and 123, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 123 into our formula, we get:
(47 + 123)/2 = 85
Thus, the number halfway between 47 and 123 is 85.
To check that our answer is correct, we subtract 47 from 85 and subtract 85 from 123 and compare the two numbers:
85 - 47 = 38
123 - 85 = 38
As you can see, the halfway number is 38 higher than 47 and 38 lower than 123. Therefore, our halfway between answer of 85 above is correct.
Halfway Between
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Halfway Between 47 and 124
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