
When you ask "What number is halfway between 45 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=45 and Y=73.

To find the number halfway between 45 and 73, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 45 and 73 into our formula, we get:
(45 + 73)/2 = 59
Thus, the number halfway between 45 and 73 is 59.
To check that our answer is correct, we subtract 45 from 59 and subtract 59 from 73 and compare the two numbers:
59 - 45 = 14
73 - 59 = 14
As you can see, the halfway number is 14 higher than 45 and 14 lower than 73. Therefore, our halfway between answer of 59 above is correct.
Halfway Between
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Halfway Between 45 and 74
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