When you ask "What number is halfway between 4 and 73?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=4 and Y=73.
To find the number halfway between 4 and 73, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 73 into our formula, we get:
(4 + 73)/2 = 38.5
Thus, the number halfway between 4 and 73 is 38.5.
To check that our answer is correct, we subtract 4 from 38.5 and subtract 38.5 from 73 and compare the two numbers:
38.5 - 4 = 34.5
73 - 38.5 = 34.5
As you can see, the halfway number is 34.5 higher than 4 and 34.5 lower than 73. Therefore, our halfway between answer of 38.5 above is correct.
Halfway Between
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Halfway Between 4 and 74
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