
When you ask "What number is halfway between 42 and 725?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=725.

To find the number halfway between 42 and 725, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 725 into our formula, we get:
(42 + 725)/2 = 383.5
Thus, the number halfway between 42 and 725 is 383.5.
To check that our answer is correct, we subtract 42 from 383.5 and subtract 383.5 from 725 and compare the two numbers:
383.5 - 42 = 341.5
725 - 383.5 = 341.5
As you can see, the halfway number is 341.5 higher than 42 and 341.5 lower than 725. Therefore, our halfway between answer of 383.5 above is correct.
Halfway Between
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Halfway Between 42 and 726
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