When you ask "What number is halfway between 3 and 54?" 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=54.
To find the number halfway between 3 and 54, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 54 into our formula, we get:
(3 + 54)/2 = 28.5
Thus, the number halfway between 3 and 54 is 28.5.
To check that our answer is correct, we subtract 3 from 28.5 and subtract 28.5 from 54 and compare the two numbers:
28.5 - 3 = 25.5
54 - 28.5 = 25.5
As you can see, the halfway number is 25.5 higher than 3 and 25.5 lower than 54. Therefore, our halfway between answer of 28.5 above is correct.
Halfway Between
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Halfway Between 3 and 55
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