When you ask "What number is halfway between 3 and 91?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=3 and Y=91.
To find the number halfway between 3 and 91, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 91 into our formula, we get:
(3 + 91)/2 = 47
Thus, the number halfway between 3 and 91 is 47.
To check that our answer is correct, we subtract 3 from 47 and subtract 47 from 91 and compare the two numbers:
47 - 3 = 44
91 - 47 = 44
As you can see, the halfway number is 44 higher than 3 and 44 lower than 91. Therefore, our halfway between answer of 47 above is correct.
Halfway Between
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Halfway Between 3 and 92
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