When you ask "What number is halfway between 42 and 783?" 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=783.
To find the number halfway between 42 and 783, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 783 into our formula, we get:
(42 + 783)/2 = 412.5
Thus, the number halfway between 42 and 783 is 412.5.
To check that our answer is correct, we subtract 42 from 412.5 and subtract 412.5 from 783 and compare the two numbers:
412.5 - 42 = 370.5
783 - 412.5 = 370.5
As you can see, the halfway number is 370.5 higher than 42 and 370.5 lower than 783. Therefore, our halfway between answer of 412.5 above is correct.
Halfway Between
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Halfway Between 42 and 784
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